Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
2014 kenworth t680 no taillights on tractor or trailer. No
2014 kenworth t680 no taillights on tractor or trailer … read more
BrentR718
BrentR718
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I have a 96 Freightliner fld 120 I have a strange problem
I have a 96 Freightliner fld 120 I have a strange problem when I turn the park lamps on I get front lights but no tail lamps on the rear of the tractor. But if I connect a trailer with the pig tail everything on the trailer functions correctly but no tail lamps still on the rear of the tractor any ideas? … read more
Daniel Wilson
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The marker lights decided to not work when the headlights
The marker lights decided to not work when the headlights turned on, however, the trailer markers are on with the exception of taillights. When the switch is turned on for the parking lights all the m… read more
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Need wiring diagram for external lights on 19 cascadia. 2019
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When I turn headlights on my dash lights go out. 2007
2007 freightliner columbia. Detroit 60 series 14 l … read more
AMANDEEP MAHERU
AMANDEEP MAHERU
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My taillights on my truck quit. this includes the trailer
My taillights on my truck quit. this includes the trailer lights. All other lights are working correctly. I also want to mention that occasionally the taillights(LEDS) on both the truck and trailer wo… read more
Drue Casey
Drue Casey
Heavy Duty Diesel Mechanic
Vocational, Technical or Trade School
What is the difference between marker lights and running
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Expert
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I have a 2012 freightliner Coronado that the turn signals
I have a 2012 freightliner Coronado that the turn signals will not work when the headlights are on before I got it they had put a new pigtail for left headlight new light switch new turn signal switch… read more
FIX-IT
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I need some electrical help. I have recently purchased a
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Daniel Wilson
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I have a 2010 Freightliner M2, last 6 of the VIN are AR5318.
I have a 2010 Freightliner M2, last 6 of the VIN are AR5318. Our marker lights (clearance lights on top of cab)were flickering, now they don't work at all. We have headlights, taillights, turn signals… read more
Jeremy
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I am working on a 2007 freightliner it is says the throttle
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spankyjr1
spankyjr1
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Vocational, Technical or Trade Scho
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On this 1999 freightliner fld 120, 60 series. I have a light
On this 1999 freightliner fld 120, 60 series. I have a light problem. When the head lights are on the marker and tails are not only on tractor. The trailer is fine. Already changed the light switch. I… read more
Wayne
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2007 Freightliner Columbia Detroit engine. Qualcomm installed.
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I have a 2001 freightliner century. When I turn on headlights
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2007 freightliner century headlights work signals work brake
2007 freightliner century headlights work signals work brake lights work, but no running lights or cab marker lights. Note i just installed led left and right front corner lights before this problem o… read more
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2011 freightliner Coronado, with the marker light switch on,
2011 freightliner Coronado, with the marker light switch on, I have normal lighting but when I turn the headlights on, all the clearance lights on the tractor and all the lower lights and tail lights … read more
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I have a 96 fld120 freightliner tractor with a Detroit series
I have a '96 fld120 freightliner tractor with a Detroit series 60 - 430/470 hp engine. The truck was backed into a dock that put the tractor a fairly steep nose-up angle. After unloading trailer ( app… read more
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I have a 2003 freightliner Colombia and have a check engine
I have a 2003 freightliner Colombia and have a check engine with a code that flashes 25. What is that?… read more
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Meet the Experts:

Daniel Wilson

Daniel Wilson

11,379 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

5,234 satisfied customers

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

2,740 satisfied customers

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

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cumminsdr

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All types of Cummins applications

Curtis B.

Curtis B.

Technician

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

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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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