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TailGate Wiring Info

80230 Views 80 Replies 30 Participants Last post by  tanman430
I wrote this page a few weeks ago and recommed doing the upgrade: http://fullsizebronco.com/forum/showthread.php?s=&threadid=7937
But there is no single place for tailgate wiring info on this site yet.

I decided to make my own wiring diagram, be back later :D
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Tailgate power window motor wiring

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Just what the Dr. needed.......

Thanks Ryan!
2
78-86 Bronco heated window wiring. (without under hood fuse box)




87-96 Bronco heated window wiring. (with under hood fuse box)
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Thanks Ryan, this is great info :thumbup I printed it out and stuck in my haynes manual for future reference.
what years is that for? or do they all work similar? my rear window on my 79 dont go up, and i dont know a dang thing about the wiring of it all... so this would help.
Same from 1980-1996, I can't find any 78-79 diagrams to conferm, but I'm pretty sure they are the same as well.

The defroster changed a little when the underhood fuse box was used in the 90's
The change to the circuit actually occurred in '87 when the defrost switch moved from below the dash to within the dash. The early one was a black box with a slide lever, a green indicator, and an electrically separate blue backlight; the '87-91 style was a black rocker with an yellow indicator and a green backlight; the '92-96 switch had a chrome bar button with an orange indicator light and blue backlit letters. But the 2 later styles are electrically interchangeable.

Ryan
Just FYI: I stole your diagrams and added them to this album. :D

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Steve83 said:
Ryan
Just FYI: I stole your diagrams and added them to this album. :D
You did What? :mad:






















Just kiding, I've copied lots of the pics off your site too :D
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Fireguy50 said:
Thanks for the great writeup!

I searched for it because I'm trying to locate the defroster connection in my tailgate. I'm rewiring the mess leading to the tailgate, and all I have is 2 cut wires that lead to the defroster connection. They're wrapped in a cloth sleeve. I can't find where they connect to. :banghead


Thanks!
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John
Ryan's photo shows an '80-?89 tailgate harness. Yours will have a different connector inside the L frame rail just forward of the rear bumper with the window & defrost wires in 1 connector. Inside the t/g, though, it'll be the same as older harnesses, but his photo doesn't show that end of the harness. It's just 2 flat terminals on a long harness take-out that reaches from one side of the glass to the other. They're the same size & type as the "Tailgate Latch Switch" terminals in his photo, but they're in separate connectors, instead of the double-connector shown for the switch.
Steve83 said:
John
Ryan's photo shows an '80-?89 tailgate harness. Yours will have a different connector inside the L frame rail just forward of the rear bumper with the window & defrost wires in 1 connector. Inside the t/g, though, it'll be the same as older harnesses, but his photo doesn't show that end of the harness. It's just 2 flat terminals on a long harness take-out that reaches from one side of the glass to the other. They're the same size & type as the "Tailgate Latch Switch" terminals in his photo, but they're in separate connectors, instead of the double-connector shown for the switch.
I thought you'd be the guy to answer my question, thanks Steve! I do need to read your reply a few times to try and picture what you're describing.

Now that I've wound the window halfway down, I see the tabs for the defrostrer. One's 5 inches from the glass' driver's side, the other's 22 inches. It seems I'm missing a chunk of the wiring harness.

Got a spare you can sell???

Thanks again... back to the tailgate.
JohnDeStef said:
Got a spare you can sell???
Nope. I don't think I have any t/g parts left. Maybe the long weatherbelts stashed somewhere, but I haven't run across them in recent memory. Oh, I do have some of the long clips to hold the trim panel on, but I can't think of anything else.

******EDIT*****
I have plenty of t/g parts now.
Just realized I ought to stop & say thanks. I found this diagram while searching the www for tailgate info, & also found FSB at the same time. Thanks for the info, my window has been happily working ever since :thumbup .
Just realized I ought to stop & say thanks. I found this diagram while searching the www for tailgate info, & also found FSB at the same time. Thanks for the info, my window has been happily working ever since :thumbup .
Ya same here.
Thanks for the great tailgate info!

I have been looking at a '90 Bronco Eddie Bauer edition at an auction where I work night security. Got the tailgate glass down then couldn't get it back up after opening and closing the tailgate! :cry

Thought I was doomed until I found this thread. Sure enough, connected motor straight to the battery and got the tailgate glass up!

Think I'll place a bid on that Bronco!;)
I thought this thread needed some tags so it comes up for newbies. Thought of more but it will only let me add 2.
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