Are the taillights wired to the highbeam switch on a 1978 Ford F-150 Custom?

5

Asked by Dec 31, 2013 at 11:04 PM about the 1978 Ford F-150

Question type: Maintenance & Repair

We don't have turn signals on our truck.  Are the tail lights wired with the high beam switch? Does the high beam switch have to be grounded?

5 Answers

72,435

No and the dimmer switch is grounded to the floor pan. HTH. -Jim

1 of 1 people found this helpful.

maybe this will schematic for us~

1 of 1 people found this helpful.
Best Answer Mark helpful
21,120

You have a 35 year old truck. Let me ask, did the tail lights ever work as they suppose to? Did you just acquire the truck? Vintage vehicles use to have replaceable flashers associated with the turn signals. Your's may be out. With the key on, manually move the signal arm up and down. If the tail lights switch on and off the flasher is shot.

2 of 2 people found this helpful.
5

Yea they worked perfectly before we switched out the beds. I had a shortbox step side originally but I went to the junkyard and picked up a regular shortbox that was on an other 78 f150. When I get home I realized that the wiring harness had a broken wire inside it. And then I figured out the box was off a 67 f150and that had a diffdifferent wiring. So I got it figured out eventually, I had to run about three more grounds and rewire it completely. It was a pain but now I got it. That diagram really helped.

72,435

Awesome, thanks for letting us know. -Jim

Your Answer

F-150

Looking for a Used F-150 in your area?

CarGurus has 221,765 nationwide F-150 listings starting at $1,200.

ZIP:

Ford F-150 Experts

  • #1
    OJ
    Reputation
    9,450
  • #2
    dandyoun
    Reputation
    4,650
  • #3
    tennisshoes
    Reputation
    3,270
View All

Related Models For Sale

Used Ford Mustang
609 Great Deals out of 39,402 listings starting at $1,895
Used Ford F-250
448 listings starting at $2,500

Used Cars For Sale

2018 Ford F-150 For Sale
4 Great Deals out of 118,907 listings starting at $20,313
2017 Ford F-150 For Sale
188 Great Deals out of 27,563 listings starting at $16,402
2016 Ford F-150 For Sale
213 Great Deals out of 7,848 listings starting at $16,991
2015 Ford F-150 For Sale
530 Great Deals out of 11,401 listings starting at $11,990
2014 Ford F-150 For Sale
775 Great Deals out of 15,329 listings starting at $8,075

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.