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Cab lights wont work on 2001 379 peterbilt

I have an 01 379 peterbilt and the cab lights along with the upper marker lights on my trailer will not work. i have checked all the fuses and relays that i can find and there appears to be nothing wrong

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6ya6ya
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Posted on Jan 02, 2017

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davidkay61
  • 23 Answers

SOURCE: 2005 Chevy Tahoe Trailer Running Lights Out

Depending on what type of trailer you have, a blown lightbulb on one marker could kill them all (like the old Christmas light strings). Look at those, and make sure your ground is good.

Posted on Nov 27, 2008

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  • 1 Answer

SOURCE: fuse location on 2004 gmc envoy

Yes under your hood on the passenger side, take off the plastic fuse holder lid and it will tell you on the backside which fuse is for the taillights.

Posted on Mar 10, 2009

  • 88 Answers

SOURCE: rear brake lights don't work

you prob got a trailer plug prob bad wires if not tail lights run through turn signal switch tell fix ya bout me ok

Posted on May 23, 2009

  • 19 Answers

SOURCE: A/C IS NOT WORKING IN THE CAB OF 2006 PETERBILT

it is not a fuse it is a relay will be on your ac relay

Posted on Aug 15, 2010

  • 1 Answer

SOURCE: marker lights wont work on my trailer. but the

96 gmc topkick truck... marker lights won't work... where do i find a fuse box diagram... which fuse box???

Posted on Nov 11, 2010

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1st, is theodd location on the 97-98, engine mini fuse panel has a 20 A fuse forthe stop / turn lamps. Have seen it covered in tape from the factory onsome 97-98 MY trucks.
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Download a PDF version from Ford, for the 1997 MY at :

https://www.fleet.ford.com/maintenance/owners_manuals/default.asp

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3b8aa6c.jpg

The others :
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