Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
2012 peterbilt 386 all lights are working except trailer
2012 peterbilt 386 all lights are working except trailer brake lights I'm getting no power to pig tail plug for trailer brake lights. I changed brake switches and relay and still not working?? … read more
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Mikael
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turn signals on tractor flash fast and no turn signals or brake lights on trailer I have a 2013 freightliner Cascadia tractor … read more
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Daniel Wilson
Auto Mechanics 1&2/diesel mech
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I have 2012 Freightliner Cascadia and I can't get my trailer lights to work on my trailer. I have now noticed that my blinker lights on the tractor are flashing very fast. I replaced fuses already but… read more
Daniel Wilson
Daniel Wilson
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2012 f550 6.7. Intermitant left side blink and brake light.
2012 f550 6.7. Intermitant left side blink and brake light. One day they work, the next don't … read more
Chris (aka-Moose)
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I have a 2015 freightliner cascadia with dd15 motor. The
I have a 2015 freightliner cascadia with dd15 motor. The tractor abs light starts flashing randomly on dash while driving and the trailer tail lights stop working. sometimes it does it within hours an… read more
Wayne
Wayne
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Vocational, Technical or Trade Scho
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2012 cscadia trailer brake lights stay lit trailer relay is
2012 cscadia trailer brake lights stay lit trailer relay is being triggered can't find secondary brake light switch service brake switch functions properly and tractor brake lights not lit. relay grou… read more
Roy Belding
Roy Belding
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Left trailer brake light stays on constantly and left turn
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Don
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Want to be connected to Wayne to get my question answered.
want to be connected to Wayne to get my question answered … read more
Wayne
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Where is relay for tractor and trailer turn signal. 2013
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Daniel Wilson
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I have no marker lights, tail lights, or side signal lights.
I have no marker lights , tail lights, or side signal lights. The signal lights and tail lights Work when stepping on the brake or using the flashers … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
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Right side brake light does not work turn signal does. 2005
right side brake light does not work turn signal does … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
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Right turn signal works on tractor not trailer dash and
right turn signal works on tractor not trailer dash and trailer lights just stay on while tractor flashes front and rear … read more
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I am having problems with 2013 Freightliner Cascadia? Can
I am having problems with 2013 Freightliner Cascadia? Can you help me? … read more
Jeremy
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I have a 2012 W900 KW and all my turn signals and indicators
I have a 2012 W900 KW and all my turn signals and indicators work fine except I have no rite turn signal for the trailer. i checked all the fuses and checked the trailer wiring coming out of the truck… read more
spankyjr1
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FIX-IT
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My job has a 1990 Ford F800. I don't know the engine or anything like that offhand since I am not at work. My question pertains to the wiring of the rear lights. We have no brake lights and the turn s… read more
Wayne
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Vocational, Technical or Trade Scho
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I have a 2010 kenworth w900l I am having turn signal problems.
I have a 2010 kenworth w900l I am having turn signal problems. My right signal does not work no indicator light no trailer or fender lights but the rear light does work. I have swapped the flasher mod… read more
spankyjr1
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Why does my peterbilt 367 semi blow a 20 amp fuse in the power
Why does my peterbilt 367 semi blow a 20 amp fuse in the power G5 fuse location in the engine compartment fuse panel when I use the left turn signal… read more
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Meet the Experts:

Daniel Wilson

Daniel Wilson

4,737 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

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I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

4,023 satisfied customers

worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling

Jeremy

Jeremy

Certified Truck/Bus Technician

4,361 satisfied customers

ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, Network Engineer specializing in CAN faults, Aftertertreatment, and vehicle communications

cumminsdr

cumminsdr

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All types of Cummins applications

Curtis B.

Curtis B.

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Technician turned service manager on multiple lines of trucks and engines, used in industry.

Chris (aka-Moose)

Chris (aka-Moose)

Technician

353 satisfied customers

24 years of experience diagnosing & repairing

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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