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Wiring problem, blow fuses when I turn on headlights... #913031 01/24/11 07:52 PM 01/24/11 07:52 PM
Joined: Apr 2006 Posts: 90 Moparland M maxxx OP member
maxxx OP member M Joined: Apr 2006 Posts: 90 Moparland	Hi guys, I'm having problems with electrical on my 78 Dodge truck. When I pull the headlight switch to parking lights or headlights on, blows the fuse within 4 seconds. Also, when I apply the brake, it will blow that fuse within 4 seconds.This is what I have done so far... I checked parking bulbs and replaced them. One was a little corroded so I cleaned it. Checked tail lights and they were fine but I replaced them anyway. Checked all wiring looking for contact with the truck or metal. Found trailer brake wiring laying on the exhaust tail pipe. Wrapped the wire that was burned, then rewrapped all wires back together and moved it. Looked in the dash around headlight switch and under dash for loose or frayed wires, nothing. Any ideas?

Re: Wiring problem, blow fuses when I turn on headlights... [Re: maxxx] #913032 01/24/11 07:59 PM 01/24/11 07:59 PM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	Quote: Any ideas? might start by seperating all the connectors to the rear of the truck to pin it down some. On a car it'd be the connectors in the DR kick panel but on a truck I'm not sure but my 440 '78 D150 is (most likely) coming back to (my) possesion in a few weeks but b 4 I let it go I did not do much to it other than swap the 318 for the 440 and it was my 1st truck so limited truck exp. live every 24 hour block of time like it's your last day on earth

Re: Wiring problem, blow fuses when I turn on headlights... [Re: RapidRobert] #913033 01/24/11 08:05 PM 01/24/11 08:05 PM
Joined: Feb 2003 Posts: 8,680 A Andrewh master
Andrewh master A Joined: Feb 2003 Posts: 8,680	which fuse?

Re: Wiring problem, blow fuses when I turn on headlights... [Re: Andrewh] #913034 01/24/11 08:36 PM 01/24/11 08:36 PM
Joined: Apr 2006 Posts: 90 Moparland M maxxx OP member
maxxx OP member M Joined: Apr 2006 Posts: 90 Moparland	popping bottom left Tail Park. Says M S LIC under Tail Park. Then popping brake light. It's the 3rd fuse from the bottom left.

Re: Wiring problem, blow fuses when I turn on headlights... [Re: maxxx] #913035 01/25/11 10:06 AM 01/25/11 10:06 AM
Joined: Jan 2003 Posts: 2,636 Nashville, TN M MOPARMIKE69 master
MOPARMIKE69 master M Joined: Jan 2003 Posts: 2,636 Nashville, TN	Check your tail light housings for a short 69 Road Runner vert 69 GTX hard top 70 Road Runner 4 speed 70 Hemi Cuda vert

Re: Wiring problem, blow fuses when I turn on headlights... [Re: MOPARMIKE69] #913036 01/25/11 12:13 PM 01/25/11 12:13 PM
Joined: Jan 2003 Posts: 32,943 Grand Prairie,Texas stumpy I Win
stumpy I Win Joined: Jan 2003 Posts: 32,943 Grand Prairie,Texas	Check the trailer wiring harness real closely.

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