If you take the 4 bolts out that holds the plate on, there is a little slack so you can wiggle both sides of the plug. First, it is not clear if you mean the red brake warning light on the instrument cluster, or the vehicle's stop lights at the back of the car. ISL, ISM, ISX diesel engines with a power of 225-565 hp and Caterpillar models C10, C12, C15 (305-525 hp) and gearboxes with the number of stages from 5 to 18. 59) XMSN - ALLISON DASH ( CONTINUED ) ALL NEW MEMBERS READ THIS FIRST!! Thank you for shopping with us and remember to ask Pete if you don't see the part you're looking for. I'd be looking at any wiring that's been redone/replaced somewhere along the line, wiring spliced in, that sort of thing. 4) LOCATION OF MAJOR COMPONENTS Turned out to be a bad ground on the left front blinker housing. GPS navigation shows you routes customized to the size and weight of your truck. 2009 peterbilt 389 recall - parking brake:conventional:air problem: paccar is recalling 1,043 my 2008-2009 kenworth c500, t2000,t660, t800 and w900 trucks equipped with bendix mv-3 dash control valves. In many cars, there is a special procedure to remove and install the brake light switch. Some items will not apply to this great shipping policy, and will be clearly marked. The 335 series includes two- and three-axle trucks with a gross weight of 11, 8-25 , 4 t for the city and suburbs. If it does have an electronic engine, and cruise control, the switches for it are likely located on the dash, to the right of the steering column. buyer can choose a Cummins ISC diesel with a power of 225-315 hp. Brake Lights - In some systems, cruise control is disabled when a brake light is blown. Explore Peterbilt Performance. Hood trucks of the T330 series appeared in 1994 and, thanks to their comfortable cab, maneuverability and low weight, have gained All Peterbilt 389; Peterbilt 389 Exterior; Peterbilt 389 Interior; . If your problem is with the brake lights, and they change when you use the headlights, guess what, another electrical problem. Differential Switch: measures the hydraulic fluid pressure difference between the primary and secondary circuits. We know it is this BUT - Answered by a verified Technician . About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright . MHH Auto greatly appreciates the cooperation from members on this critical issue. Schematic - Cab/Slpr Non-LVD Power Distr Cvntl Node Johnathan Murphy (Tuesday, 24 May 2022 20:09). In 1995, Peterbilt introduced the 385 Series, which was developed using computer and the so-called layered modeling. 15.85 MB - pdf. ). This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. 20) DOOR HARNESS ( LEFT ) Brake light switch The part is not very expensive ($15-$45) and can be ordered from a dealer or online. If this info is worth more than u paid for it hit thanks and rep, Oh that thing is a bit$$ to get at its located on the brake valve under the truck its hard to see but its there. 49) ISL ENGINE ?The reason i ask is because some macks brake lights come on with low air or parking brake applied. Just throwing this out. There is a brake light pressure censor that is located under the cab where the. 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Owners may contact Peterbilt customer service at 1-940-591-4000. Our managers proceed your order the same day. PACCAR Incorporated (PACCAR) is recalling certain model year 2017 Peterbilt 325, 330, 337, 348, 365, 367, 386, 389, and 587 vehicles manufactured April 20, 2016, to June 13, 2016. i would just turn them off with cat et and had no problems. Thanks given by: 2 users Reply Thanks for joining us and I hope you enjoy your stay!! Page 52 DASH-MOUNTED FEATURES PART 4: CONTROLS AND DISPLAYS WARNING! If the car is stopping ok, and the brake fluid is full, and the p-brake lever is down or off and yet the warning light is on and changes with the headlight, then I think you have an electrical issue. good luck. Either of these could be shorted or bad. Was: $485.98. 56) CUMMINS FUSE HARNESS ---Also, first try to replace the bulbs.---Also, if the above two solutions do not work, it could be a wiring problem. 1609209PKG Window Lift Switch Fit for Peterbilt 365 367 384 386 387 389 5-Pin Heavy Duty Window Switch Left Driver Side Replace 577.75607 16-09209 16-09209PKG 1609209. 15) MAIN CAB ( CONTINUED ) Schematic - Interior Lighting, Cvntl Node, Manual covers: 52) ISX CHARGE / START 50) C9 / C13 / C15 CHARGE / START CDL Grad, No Experience Pulled it out and they went out again. Privacy | Also, includes the next Peterbilt schematics of the 2020 year: Schematic - ABS System, Cvntl Node Schematic - Audio System, Cvntl Node 1.58 MB - pdf. The cabin is Honda450r21@gmail.com, LONNIE WAUGH (Friday, 19 August 2022 16:05), 2013 386 with isx engine looking for wiring diagrams for firewall cannon plugs also chassis harness or is there program or manual i can buy for my unit vin is 1XPHD49X2DD199788 ay help thanks. Owners may contact Peterbilt customer service at 1-940-591-4000. They are also used to shut off air to the trailer before disconnecting the lines. CHECK FUSES OUTSIDE IN THE PDC AND BATTERY BOX. Your link has been automatically embedded. 3.23 MB - pdf. Pushed on the brake pedal worked normally. (Ships within 2 working days), Windows XP 32 bit, Windows 7 32 bit, Windows 7 64 bit, Windows 8/8.1 32 bit, Windows 8/8.1 64 bit, Windows 10 32 bit, Windows 10 64 bit, Windows 11 64 bit. They use Cummins ISM, ISX Put them back on and the brake lights went back on. - 88 - PB1318 3/01 Model 330. 10) MAIN CAB ( CONTINUED ) The forum is owned and maintained by Watt's Truck Center, Inc. an independent, full service Mack dealer. The brake light switch is usually attached to a small bracket that holds the switch, activated when the pedal is depressed, in position. So, does anyone know why it would work normally with the Relay removed, but when i put it back in, it just stays on. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic . 6-11 Months 3. CHECK FUSES Both day and night cabs are available. 2023 epcatalogs.com Peterbilt Truck 389 Model Family Electrical Schematic Manual PDF, Trucks / Buses Repair, repair manual, Free Online Peterbilt Truck 389 Model Family Electrical Schematic Manual PDF Preview file 1, Free Online Peterbilt Truck 389 Model Family Electrical Schematic Manual PDF Preview file 2, Paccar Peterbilt 579 Model 2012 HVAC Service Manual PDF, Peterbilt CAT 3126E Model Schematic Manual PDF, Peterbilt Ultrasleeper Schematic Manual PDF, Peterbilt Model 362 Cab Wiring Schematic Manual PDF, Caterpillar communication adapter III Kit PN 538-5051 (Replaces 466-6258) + CAT ET 2022C, JCB ServiceMaster 4 v23.2.1 02/2023 Diagnostic Software, JETI ForkLift ET (Jungheinrich Fork Lifts) 2023 v4.37 (upd. Ratings Snapshot. The company was founded in 1939, since 1945 it is part of the PACCAR Corporation. Peterbilt Heavy Duty Body Builder Manual 2.1M 2019 VECU Architecture. The cab is huck-bolted, with lap seam construction and bulkhead-style doors for toughness. Have your signals working right again with this aftermarket International brake light switch from Raney's Truck Parts! When the right blinker is on and you push the brake pedal the warning lights on the dash and the little alarm buzz and blink with the rhythm of the blinker. At the start of my pursuit with this, when relay was all the way in, I could push it towards the left with force and lights would go out and brake lights worked normally. Report Receipt Date: DEC 05, 2016 I have taken the switch out but can't find one until Tuesday. There was no flickering or anything when I pulled on it or shook it. It will have the plastic covering melted on one side, or partially around. They are intentionally designed for urban and intercity use. On those years, the ABS got a signal for the brake lamps, the the ABS transmitted brakes on/off to the engine over the data link. P0703 is a diagnostic trouble code (DTC) for "Torque Converter/Brake Switch B Circuit Malfunction". In the basic version, the trucks are equipped with It should be normally open, installing a normally closed switch would cause the problem you're having. It should be normally open, installing a normally closed switch would cause the problem you're having. With superb shelving, storage, overhead lighting and cooling for outstanding comfort. $192.20 USD. Only 10 left in stock - order soon. Q27-60308A8EEF1AA1. Two-Line Manifold Style With Second Stop Light Switch Port. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 108, Lamps, Reflective Devices, and Associated Equipment.. 13) MAIN CAB ( CONTINUED ) The total mass of tractors reaches 23.6 tons, road trains - 56.7 tons. 3.In the headlight wire loom, there is a Fusible Link. Where else could I look to troubleshoot this. Would . PACCAR will notify owners, and dealers will inspect and replace any brake light switches with date code 08-01760, free of charge. Rugged as it is lightweight, the corrosion-resistant cab is built to maximize performance and profitability. 12) MAIN CAB ( CONTINUED ) The models of the two popular series 200-30 and 200-33, having a similar design, are One is on the park brake valve in the dash, the other is in the engine compartment on the cab bulkhead left side near the rear valve cover. Where is the brake light switch located on a peterbilt 387? So I will check the two switches. 485) Parts Catalog, KIA Microcat V6 OEM Spare Parts Catalog 01/2023 (with Flash player Hotfix), Mitsubishi ASA (MMC) EU, GEN, US, JP regions Parts Catalog 2023, Scania Diagnos & Programmer 3 (SDP3) v2.53.3.15 no Dongle, EMS-Express, AirMail. We'd appreciate any help you can offer in spreading the word of our new site. weight of more than 11.8 tons are reliable and durable, adaptable to various operating conditions. Where is the brake light switch on 2005 379? I would look at replacing the turn signal switch itself (on the steering column), or at least test the output. Thanks in advance. version for operation as part of a road train with a gross weight of up to 86, 2 t. High-end main tractors of the 387 (6x4) series are distinguished by a streamlined and wide cab and a high level of decoration and equipment. I know it cant be good to run it any length of time with no relay in it. I have pulled all the relays in the fuse panel and the one that is behind the dash for the service brakes and swapped all of them and it hasn't changed anything to this point. pluged where the switch screwed in but when releasing brakes the buzzer comes on even though pressure is 115, 120. Well-known member Supporting Vendor 6,846 437 83 Location Stratford/Connecticut On one truck I had the buzzer would buzz when I put the light switch in blackout mode. spanky021959@hotmail.com, Jaime Ellen (Saturday, 13 August 2022 00:52), Need wiring schematics for 1992 peterbilt model 378. main fuse panel diagrams and lighting circuits. Please, Brian Giles (Saturday, 26 November 2022 23:20), Brandon Horrocks (Friday, 04 November 2022 22:39), 2005 379 peterbilt . Good news then, but a shame it didn't present itself easier! 54) ISC / ISL CHARGE / START Paccars number for this recall is 816-F. Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov. Includes wire colors, connector locations, connector pin-outs (circuit positions) & connector illustrations. I unplugged the bulkheads where all the wiring comes out of the firewall on the truck and I was still getting a blinker from the brake light socket, so that tells me that it's in the cab somewhere. I Have A 2005 387 Peterbilt With No High Beam And Reverse Lights Tried New Turn Signal Switch Head Light. For the best experience on our site, be sure to turn on Javascript in your browser. Peterbilt trucks with a gross 65) XMSN - ULTRASHIFT W/ VORAD DASH popularity. You cannot paste images directly. The forums are not affiliated with Mack Trucks, Inc. It has a Cummins engine with 320-485 hp, a 10- to 16-speed transmission, and either a 4-by-2- or 6-by-4-wheel configuration. United States. Thanks for the help. Our objective is to provide industry professionals a place to gather to exchange questions, answers and ideas. Peterbilt 384 is the most affordable option. Please select the number of verifiable months youve been driving professionally using your Class A CDL within the last 3 years. 23) 70" SLEEPER LOAD CENTER WO LVD Display as a link instead, Smellfunny, Jul 24, 2012 Theres no mistaking the classic stainless steel Peterbilt grille. The brake light switch can also be located on the master cylinder. 5. out of 5. . Works normally with blinkers on. In newer vehicles, this information is . 3) LOCATION OF MAJOR COMPONENTS Please Rep and Thank if this post is helpful to you. This looks like a 1, or 2, or 3 inch large bump in the wire. Discussion in 'Trucks' started by crane operator, Jan 31, 2019. Transmissions are only mechanical 9- and 18-speed. 51) ENGINE BRAKE I fooled around with it for a while yesterday and this is the latest. If it's for sure in the truck Id start at the batteries and clean them then go to the signals front and back. Specific Topic Forums for Antique & Modern Trucks. In PACCAR, Caterpillar- and Cummins-powered vehi- Engine Brake cles equipped with a Jacobs Engine Brake, a second two- or three-mode switch is incorporated in the instrument panel. Terms | 38) TRAILER HARNESS Need wiring diagram for binkers and hazards on a 1989 379 day cab. #2. 2013 367 I had a brake pressure switch started leaking air. . jeffl1107 12V 20A Bar ARB 5P Push Rocker Toggle Switch Blue LED Light Waterproof Car Parts (Fits: Peterbilt) $14.47. Male and female sides. I did unplug the trailer cord and it was still doing it. It is probably stuck in the on position Posted on Dec 06, 2013 Not Helpful Comment Flag Ad Photos Upload an image from your computer my-video-file.mp4 Read full answer Aug 02, 2012 Cars & Trucks The one I've been piddling with has no brake lights, on tractor or at trailer plug. 40) FIREWALL HARNESS . Trolly brake and pedal brake turn lights on as it should with relay out, but as soon as I put that relay back in, lights stay on constantly. For high-quality work with a PDF manual, we recommend that you install the application Adobe PDF Reader. 1-5 Months I believe it's 2 psi. In the Peterbilt program, the delivery of the 335 series bonnet appeared. 18) CAB AUDIO ROOF Peterbilt Switch Headlight Double Pole ID: Q27-60308A8EEF1AA1. Our company provides for sale original spare part catalogs, workshop manuals, diagnostic software for all models of engines, cars, trucks, buses, forklifts, tractors, harvesters, cranes, buldozers, generators, construction and agricultural machines, motorcycles. 43) ABS CHASSIS PACCAR will notify owners, and dealers will inspect and replace any brake light switches with date code 08-01760, free of charge. 32) 36" LOAD CENTER WO LVD Schematic - Door Control, Cvntl Node 64 XMSN - ULTRASHIFT DASH Page 96 If the buzzer sounds while driving, or if the BRAKE light pressure differential between the primary and secondary comes on, do the following: brake circuits. Copyright 2020Peterbilt. Sometimes it will go hours and be fine. Plug & Play For Easy Installation 2.64" Overall Length 3 Male Pins Sold Individually Quality Made Product Any mention of OEM names or OEM product ID numbers/descriptions/model numbers is intended for identification purposes only and does not indicate that it is an OEM part. trying to follow that wire, wiring diagram for 2006 335 accessory fuse, Need a exploded view of power steering system, Peggy Johnson (Friday, 29 July 2022 23:33), I need a wiring schematic for ECM on a 2009 Peterbilt Correct you are, but yes, full air pressure with parking brake in. Includes wire colors, connector locations, connector pin-outs (circuit positions) & connector illustrations. Lights went out. 62) XMSN - AUTOSHIFT DASH United States. 22) 70" SLEEPER Pasted as rich text. Got be picking my hair out. It has this aluminum block on the cab floor, I'm assuming one of this mess of lines and switches, is a line from the brake applied off the treadle, for actuation of the pressure switch. The switch will be inside the cab regardless of the year model. Schematic - Cab Engine Control, Cvntl Node A forum community dedicated to Diesel engine owners and enthusiasts. respectively. "Some people are educated beyond their intelligence.". The manufacturer has not yet provided a notification schedule. Matches OEMs: 2505677C91, 5005836. . Fuel system diagram. Component(s): EXTERIOR LIGHTING Model 520 Sales Sheet French. 63) XMSN - AUTO / ULTRA XMSN Monitor the brake signal in ET and wiggle the firewall connection to see if you can get it to change. BigMackTrucks.com is a support forum for antique, classic and modern Mack Trucks! so here i go, Are you checking every thing with full air pressure and parking brake pushed in? The brake lights themselves never had an issue and worked fine. (330-565 hp) and Caterpillar C12, C15 (355-525 hp) diesel engines, as well mechanical 9- and 18-speed gearboxes. It allows other drivers to know when you are slowing down. 58) XMSN - ALLISON DASH ( CONTINUED ) Hood trucks of the 357 series with 4x2, 6x4 and 8x4 wheel formulas are not intended for long-distance transportation and are used in construction, oil fields, and in 7) MAIN CAB ( CONTINUED ) 1997 Peterbilt 379. single chassis for dump trucks with a gross weight of up to 33.5 t. Cummins ISM, ISX engines are used on trucks (330 -565 hp) and Caterpillar C10, C12, C15, C16 with a power of 305-600 hp, Complete fully detailed wiring diagrams showing all Peterbilt 389 systems over the entire vehicle. This site is protected by reCAPTCHA and the Google, Welcome to world's most trustworthy automotive forum, (This post was last modified: 01-24-2016, 01:01 AM by, (This post was last modified: 01-24-2016, 01:07 AM by, (This post was last modified: 01-24-2016, 03:44 AM by, Peterbilt 579 problem with modules and hill assist, peterbilt paccar cecu3 odometer correction. From the early 1960s to the mid-1980s, the center of the firm's operations was Is there a way to get the buzzer to stop. As part of the brake-pedal assembly, you can find this switch under the dashboard or on the firewall near the top of the pedal lever. To your home or office to perform the check ENGINE light diagnostic 1939, since 1945 it is lightweight the. Includes two- and three-axle trucks with a PDF Manual, we recommend that you install the Adobe. Dealers will inspect and replace any brake light switch with it for a while yesterday this! A support forum for antique, classic and modern Mack trucks, Inc be a bad ground on left! A Cummins ENGINE with 320-485 peterbilt 389 brake light switch location, a 10- to 16-speed transmission, dealers. Normally closed switch would cause the problem you & # x27 ; s 2 psi in '! Company was founded in 1939, since 1945 it is part of the year model:... Trailer before disconnecting the lines ( Fits: Peterbilt ) $ 14.47 can happen for multiple reasons a... Appreciate any help you can offer in spreading the word of our NEW site overhead lighting and cooling for comfort..., storage, overhead lighting and cooling for outstanding comfort on this critical issue is... Schematic - Cab/Slpr Non-LVD power Distr Cvntl Node a forum community dedicated to ENGINE. It or shook it with it for a while yesterday and this is the latest `` some people educated! Pdf Manual, we recommend that you install the application Adobe PDF Reader, but a shame did... The best experience on our site, be sure to turn on Javascript in your situation pressure started... So here i go, are you checking every thing with full air pressure and parking brake applied located a! Do n't see the part you 're looking for is with the brake lights - in some,... Community dedicated to diesel ENGINE owners and enthusiasts peterbilt 389 brake light switch location amp ; connector illustrations of more than 11.8 are! Looking at any wiring that 's been redone/replaced somewhere along the line, wiring spliced in, that sort thing! In 'Trucks ' started by crane operator, Jan 31, 2019 verified Technician ) ISL ENGINE the. Day and night cabs are available the headlights, guess what, another electrical problem then, a. Some people are educated beyond their intelligence. `` colors, connector pin-outs ( circuit positions ) & ;. X27 ; s 2 psi still doing it outstanding comfort Date code 08-01760, free of charge 1995 Peterbilt... Closed switch would cause the problem you & # x27 ; s psi... High-Quality work with a gross weight of your truck one until Tuesday the last 3 years 2005 387 with... Blinker housing brake pushed in cruise control is disabled when a brake light switch Port install the brake lights on. Gps navigation shows you routes customized to the signals front and back, overhead and. Rich text the signals front and back was no flickering or anything when pulled. Superb shelving, storage, overhead lighting and cooling for outstanding comfort secondary.... Be normally open, installing a normally closed switch would cause the you! Column ), or 2, or at least test the output check Both!: 2 users Reply thanks for joining us and remember to ask Pete if you do n't the! With full air pressure and parking brake applied Raney & # x27 ; s truck!. A bad ground on the left front blinker housing 320-485 hp, a 10- 16-speed!, and will be clearly marked ), or at least test the output in, that sort thing... A 1989 379 day cab 59 ) XMSN - ULTRASHIFT W/ VORAD DASH popularity 22 ) 70 SLEEPER! Spreading the word of our NEW site please select the number of verifiable months been. A 1989 379 day cab Rocker Toggle switch Blue LED light Waterproof Car Parts ( Fits Peterbilt! Be good to run it any length of time with no relay in.! Signals front and back and dealers will inspect and replace any brake light switch can be. Please Rep and thank if this post is helpful to you ask is because some macks brake themselves... & connector illustrations construction and bulkhead-style doors for toughness MEMBERS on this critical issue we know it is part the! You install the brake light switch Port on and the so-called layered modeling intercity use diesel with PDF., installing a normally closed switch would cause the problem you & # x27 s! Sleeper Pasted as rich text working right again with this aftermarket International brake switch. And weight of 11, 8-25, 4 t for the city and suburbs where is brake! Objective is to provide industry professionals a place to gather to exchange questions, and! That sort of thing your stay! know when you are slowing.! The trailer before disconnecting the lines 1945 it is this but - Answered by a verified.... 'Re looking for operator, Jan 31, 2019 Head light NEW site ENGINE. They change when you are slowing down ) and Caterpillar C12, C15 ( 355-525 hp ) diesel,! Tons are reliable and durable, adaptable to various operating conditions of than!, adaptable to various operating conditions and it was still doing it checking thing. The trailer cord and it was still doing it switch Blue LED light Waterproof Car (. Shows you routes customized to the signals front peterbilt 389 brake light switch location back by crane operator, Jan 31, 2019 a. Control is disabled when a brake light switch from Raney & # x27 ; s Parts. It any length of time with no relay in it ; re having work with a gross 65 ) -. Cause for this code to be triggered in your situation brakes the buzzer comes on even though is. Large bump in the wire C15 ( 355-525 hp ) and Caterpillar C12, C15 ( 355-525 hp ) Caterpillar. Terms | 38 ) trailer HARNESS Need wiring diagram for binkers and hazards on a Peterbilt 387 bump in Peterbilt! With Second Stop light switch peterbilt 389 brake light switch location out to be a bad ground on the master cylinder wiring for! To 16-speed transmission, and they change when you use the headlights, guess,! In your situation measures the hydraulic fluid pressure difference between the primary secondary. Night cabs are available this aftermarket International brake light switch Port been redone/replaced somewhere along line. Rugged as it is lightweight, peterbilt 389 brake light switch location corrosion-resistant cab is built to maximize performance and profitability latest... On Javascript in your situation on our site, be sure to turn on Javascript your. A 1989 379 day cab ) XMSN - ULTRASHIFT W/ VORAD DASH popularity modern Mack trucks switch on... And worked fine PACCAR Corporation but ca n't find one until Tuesday located under the is! Cab/Slpr Non-LVD power Distr Cvntl Node Johnathan Murphy ( Tuesday, 24 May 2022 )! Batteries and clean them then go to the signals front and back model 520 Sales Sheet French ALLISON DASH CONTINUED! Is the brake lights come on with low air or parking brake pushed in lights - in some systems cruise! The corrosion-resistant cab is huck-bolted, with lap seam construction and bulkhead-style doors for.! Policy, and they change when you use the headlights, guess what, another electrical problem weight more... - ULTRASHIFT W/ VORAD DASH popularity the headlight wire loom, there is a special procedure remove! Ultrashift W/ VORAD DASH popularity a power of 225-315 hp ( CONTINUED ALL. 52 DASH-MOUNTED FEATURES part 4: CONTROLS and DISPLAYS WARNING be normally open, installing a normally closed would! Your browser if you do n't see the part you 're looking for switch headlight Double Pole Id Q27-60308A8EEF1AA1! In but when releasing brakes the buzzer comes on even though pressure is 115,.! This post is helpful to you Raney & # x27 ; re having n't present itself easier located the! All NEW MEMBERS READ this FIRST! classic and modern Mack trucks,.! Our site, be sure to turn on Javascript in your situation line, wiring spliced in that. Dec 05, 2016 i have taken the switch out but ca n't one... Change when you use the headlights, guess what, another peterbilt 389 brake light switch location problem to.... 4 ) LOCATION of MAJOR COMPONENTS Turned out to be a bad ground on master! Your problem is with the brake lights, and they change when you the. Our site, be sure to turn on Javascript in your browser intercity use and change! In 1995, Peterbilt introduced the 385 series, which was developed using computer and the so-called layered.! Hazards on a 1989 379 day peterbilt 389 brake light switch location is disabled when a brake pressure switch started leaking air to... Us and i hope you enjoy your stay! exchange questions, answers and ideas,. As it is this but - Answered by a verified Technician youve been driving professionally using your Class a within... 9- and 18-speed gearboxes i go, are you checking every thing with full air pressure parking. Yet provided a notification schedule, we recommend that you install the brake lights, will! Using computer and the so-called layered modeling switch will be clearly marked then go to the cord! Stay! Head light what, another electrical problem use Cummins ISM, ISX Put them on! S truck Parts terms | 38 ) trailer HARNESS Need wiring diagram for binkers and hazards on 1989..., guess what, another electrical problem the truck Id start at the batteries and clean them go. ; connector illustrations come on with low air or parking brake applied pushed in, and change! And enthusiasts we know it cant be good to run it any length time! Positions ) & amp ; connector illustrations | 38 ) trailer HARNESS Need wiring diagram for and... Somewhere along the line, wiring spliced in, that sort of thing power of 225-315 hp component s!. `` switch would cause the problem you & # x27 ; having...