Need help ASAP!!! turn signals
Thread Starter
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Senior User
Joined: Jul 2002
Posts: 160
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From: East Freetown, MA
Need help ASAP!!! turn signals
OK here is the deal I have a 1986 Frod F150 Step-side. My turn signals front or rear are not working. The story behind it is a few days ago I noticed I had no tail lights. I went back there to look and found that the lights were not grounding themselves. What worked is when I took a wire from the harness and grounded it. Bingo I have lights and brake lights. Only problem is brake lights go dimmer when I step on the brakes with the lights on seems like something is backwards. There are three wires leaving each light, they are the square style lights, two of the are together and one is a single. Question I have is the single one leaving the light a ground? Cause I beleive that is the one I grounded. Also, would grounding the wrong wire in the rear turn the signals off in the front?? I thought they were one a different circuit. Hopefully someone can help. I tried replacing the flasher only found one, my 78 had two. Also checked the fuses, and changed bulbs. Just want to get this working!!!
Thanks for any replies,
Chris
Thanks for any replies,
Chris
New User
Joined: Jan 2008
Posts: 0
Likes: 24
Need help ASAP!!! turn signals
3 wires out each light.
**********************
Let's see >Is this the driver's side light?
There should be a
single bulb for back-up light
2 filament bulb for Turn Signal/Brake Light/ & Running Lights
Because this is on the driver side they are hooked in parallel to get to the right side of truck.
Common ground is either one wire per side or it grounds through the assembly, I would think.
**********************
Let's see >Is this the driver's side light?
There should be a
single bulb for back-up light
2 filament bulb for Turn Signal/Brake Light/ & Running Lights
Because this is on the driver side they are hooked in parallel to get to the right side of truck.
Common ground is either one wire per side or it grounds through the assembly, I would think.
Thread Starter
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Senior User
Joined: Jul 2002
Posts: 160
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From: East Freetown, MA
Need help ASAP!!! turn signals
So that would explain the three wires leaving the lights. One wire is for the brakes, other is for the backup lights, and other is for the lights. So were is it grounded? Which wire would be used as the return?? So none of the wires leaving the light should be grounded?
THanks,
Chris
THanks,
Chris
Post Fiend
Joined: Jan 2000
Posts: 5,330
Likes: 17
From: Dryden, ON, Canada
Need help ASAP!!! turn signals
No, none of the taillight wiring should be grounded, the taillights ground by one of the studs to the taillight bracket, which in turn is grounded to the bed.
There are only 2 bulbs in these lights, one single filament backup, and, one dual for brake/turn and running lights.
both sides should ground independently.
Also, there are indeed 2 flashers, if you look at the fusebox, you will see that there is a second one(the one for your 4-ways) on the back side of the box opposite the one you changed.
Evan
There are only 2 bulbs in these lights, one single filament backup, and, one dual for brake/turn and running lights.
both sides should ground independently.
Also, there are indeed 2 flashers, if you look at the fusebox, you will see that there is a second one(the one for your 4-ways) on the back side of the box opposite the one you changed.
Evan
Thread Starter
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Senior User
Joined: Jul 2002
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From: East Freetown, MA
Need help ASAP!!! turn signals
If I dissconnect the rear lights from the main harness should my directionals in the front be working? If they aren't working could the problem be a bad switch? Also do the flashers use the same lines as the directionals? Cause they work.
Thanks,
Chris
Thanks,
Chris
Post Fiend
Joined: Nov 2002
Posts: 9,987
Likes: 7
From: Memphis, TN
Need help ASAP!!! turn signals
There IS a ground wire from each bulb holder - it's screwed into the body inside the taillight opening with a green screw thru a ring terminal. The reflector is plastic, so there's no way for it to ground thru the housing.
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Thread Starter
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Senior User
Joined: Jul 2002
Posts: 160
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From: East Freetown, MA
Need help ASAP!!! turn signals
Since I have no front or back directionals does this sound like a switch problem? If I dissconnect the lights from the main harness in the rear I should still get front directionals? Also if my hazards work does that mean my wiring is correct?
Thanks,
Chris
Thanks,
Chris
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I guess I should read more carefully. 