1988 Tailgate Rewiring Problems

[crawdad43]

I did the improved tailgate rewire involving relays by Steve 83 and it works great right up until the end. I have the pig tails for the motor, the + and - wires, and a tool battery sitting on my tailgate. The + and - wires (for upward movement) have the correct grounding and voltage when the switch is pressed but when connected to the motor the wire loses all voltage and the motor does not move. When connected to the tool battery the window does move. I have no clue what is wrong.

 

[Broncobowsher]

Better to try fullsizebroncos.com.
This site is for the 1st gen. 1966-1977. The only tailgate wiring we have is a single wire for the tag light.

 

[Jdgephar]

I did the improved tailgate rewire involving relays by Steve 83 and it works great right up until the end. I have the pig tails for the motor, the + and - wires, and a tool battery sitting on my tailgate. The + and - wires (for upward movement) have the correct grounding and voltage when the switch is pressed but when connected to the motor the wire loses all voltage and the motor does not move. When connected to the tool battery the window does move. I have no clue what is wrong.

I had the same issue on my FSB. Turned out to be a bad connector at the motor junction. I could back the connection out a little bit and it would work fine.

Also, make sure the wires didn't break internally where they pivot (where they enter the tailgate).

Sent from my SM-S916U using Tapatalk

 

[SteveL]

Wait a minute. My rear windows don't go up and down. I think the po screwed me

 

[SevenT]

My rear window goes up and down, just not inside the tailgate.