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Related Medium and Heavy Trucks Questions
Cummins 2021 X15 won't start…. All headlights marker lights
Cummins 2021 X15 won't start…. All headlights marker lights AC radio work but when turn key on no dash lights will come on… but the truck won't crank … read more
Nich1019
Nich1019
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Vocational, Technical or Trade School
64 satisfied customers
I have a 2004 Peterbilt 379. When the marker light switch is
I have a 2004 Peterbilt 379. When the marker light switch is turned on, cruise control shuts off along with it. Some of the marker lights will blink with the blinker as well.Also, the clearance lights… read more
Nich1019
Nich1019
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Vocational, Technical or Trade School
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We received fault code spn 1321 fmi 14. we are at the
we received fault code spn 1321 fmi 14. we are at the facility to deliver a load that is due at 6 am tomorrow morning and need assistance getting the truck started. please help … read more
Andrew G.
Andrew G.
Heavy Truck Mechanic
Heavy Duty Equipment - Truck and Transport Mechanic
4 satisfied customers
Peterbilt 386. My right signal and right 4way is not working
my right signal and right 4way is not working and now my marker lights on my door went out … read more
Nich1019
Nich1019
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Vocational, Technical or Trade School
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My marker lamps on my 2017 Peterbilt 567 are acting up. I do
My marker lamps on my 2017 Peterbilt 567 are acting up. I do not have any running lights on the back of the tractor, front fenders or in the headlight housing. Hi/lo beams as well as turn signals all … read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
64 satisfied customers
We just bought a truck 16 389 peterbilt, things we noticed
We just bought a truck 16 389 peterbilt, things we noticed not working, roof lights, marker lights in headlight housing,along with no blinkers up front also, no taillights.. the headlights work on dim… read more
Nich1019
Nich1019
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Vocational, Technical or Trade School
64 satisfied customers
I have a 2012 386 peterbilt the headlights and marker lights
I have a 2012 386 peterbilt the headlights and marker lights all quit working until hit the right bump in the road or slam the hood then will come back on. … read more
Nich1019
Nich1019
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Vocational, Technical or Trade School
64 satisfied customers
I have a 7pin goose neck trailer connected to my peterbilt
I have a 7pin goose neck trailer connected to my peterbilt 579. When truck headlights are off, trailer lights work perfectly. When headlights are On, right brake light is illuminated on trailer, right… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
14,863 satisfied customers
I have a 2014 kenworth t680 blinker problem, the right front
I have a 2014 kenworth t680 blinker problem, the right front blinker works but the rear tractor blinker /brake light doesn't work. Replaced the light assembly still have the same problem. Marker light… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
14,863 satisfied customers
Lost driver side headlight bright and dim also cab marker
Lost driver side headlight bright and dim also cab marker lights are out now have marker lights on trailer no turn signal back there 2007 Colombia Detroit 60 series engine … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
14,863 satisfied customers
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
Jeremy. I have another conundrum on the 99 freightliner. We
Hi jeremy. I have another conundrum on the 99 freightliner. We recently had some mild to very cold weather in a short time frame. Lots of salt and moisture on the roads. Its causing havoc on the elect… read more
Jeremy
Jeremy
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Associate Degree
2,756 satisfied customers
Have a 2002 peterbilt American classic every. Time I turn on
Ok have a 2002 peterbilt American classic every. Time I turn on head lights or running lights my passenger blinker stops working but if I turn lights back of it works again what could this b … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
I have a Peterbilt tractor 379 I installed LEDs my right
I have a Peterbilt tractor 379 I installed LEDs my right blinker will not work when the headlights are on. But works when I had lights off… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
14,863 satisfied customers
Hi. My issue is my trailer right side blinkers only.When
Hi. My issue is my trailer right side blinkers only. When the four ways are on with the trailer... They eventually flicker quickly and go out. Right directionals never work on yhetrailers. Tractor onl… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
the right side blinkers works with the head lights and parking
the right side blinkers works with the head lights and parking lights off... but if I have them on it stops blinking and the turn signal in dash stays on… read more
Rudolph Diesel
Rudolph Diesel
Service manager/ Master mechanic
Vocational, Technical or Trade Scho
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Hi Jim,I have a 2012 Peterbilt 386 tractor. Tonight when
Hi Jim, I have a 2012 Peterbilt 386 tractor. Tonight when I turned on my marker/head lights the dash lights did not come on. I have done some checking and found that: 1. my cig lighter 10amp fuse is b… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
14,863 satisfied customers
I have a 2000 Western star and we are having some electrical
I have a 2000 Western star and we are having some electrical issues. The blinkers will work when the head lights are off and when they are on they will not work or they will blink slowly or sometimes … read more
Andy
Andy
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Vocational, Technical or Trade School
214 satisfied customers
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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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