[Fireguy50]

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

 

[Fireguy50]

Tailgate power window motor wiring

 

[Damager]

Thanks Ryan :thumbup

 

[Ironclad]

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

Thanks Ryan!

 

[Fireguy50]

78-86 Bronco heated window wiring. (without under hood fuse box)

87-96 Bronco heated window wiring. (with under hood fuse box)

 

[Fireguy50]

Tailgate harness overview

 

[Fireguy50]

Tailgate harness detail

 

[94 XLT BRONCO]

Thanks Ryan, this is great info :thumbup I printed it out and stuck in my haynes manual for future reference.

 

[alboy79]

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.

 

[Fireguy50]

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

 

[Steve83]

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.

 

[Fireguy50]

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

You did What?






















Just kiding, I've copied lots of the pics off your site too

 

[JohnDeStef]

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!

 

[Steve83]

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.

 

[JohnDeStef]

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.

 

[Steve83]

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.

 

[El Kabong]

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 .

 

[turbobrickman]

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.

 

[alhefner]

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!

 

[j. r. Nice]

I thought this thread needed some tags so it comes up for newbies. Thought of more but it will only let me add 2.