71 F100 Lights Issue

Asked by Feb 24, 2018 at 09:11 PM about the 1971 Ford F-100

Question type: Maintenance & Repair

I have a 71 F100 and the all lights are working except the rear running lights
and the now the Headlights Surge.   I had all working yesterday after buying
the truck and replacing the bulbs in the tail lights and now all I have on the rear
are Brake Lights and Turn Signal.  Then the headlights and cab lights starting
blinking or surging.   I would greatly appreciate any help on this matter.

3 Answers

135

Sounds to me like your having a grounding issue with lights

10

I have the same issue with my truck. My brake lights work and back blinkers. Every time a fuse is put in the fuse box it blows the fuse. I'm thinking it's like Dan said. I took back lights out cleaned the connectors oiled the team springs and everything work for a day or two. So Im probably going to do a full wire inspection if I can't find the problem I'm going to just rewire the whole truck. I believe it's are only option. But that's just my opinion. Hope you figure it out

I replaced the voltage regulator and cleaned all the grounds. This took care of the issue I was having with losing the running lights in the rear and the other lights going on and off.

Your Answer:

F-100

Looking for a Used F-100 in your area?

CarGurus has 170 nationwide F-100 listings and the tools to find you a great deal.

ZIP:

Ford F-100 Experts

  • #1
    tennisshoes
    Reputation
    550
  • #2
    MrBlueOval
    Reputation
    330
  • #3
    Rowefast
    Reputation
    300
View All

Related Models For Sale

Used Ford F-250
375 listings starting at $5,491
Used Ford Mustang
481 Great Deals out of 37,677 listings starting at $1,100
Used Chevrolet C/K 10
302 listings
Used Ford Bronco
207 listings
Used Chevrolet Camaro
488 Great Deals out of 26,999 listings starting at $2,000

Used Cars for Sale

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.