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Hi all, I'm new to the forums and have run into a few issues. I'm building a 2000 Excursion and am having trouble with the wiring. I have no turn signals, my main question is there is a plug located behind the passenger side trail light and it runs down by the tail light harness. I'm missing this wiring and everywhere I've looked I can't find the answer as to what this plug is for. Could this be why I have no turn signals? This plug I believe is an Excursion only item as I've never seen it on the trucks. This Ex started life as a 2wd 5.4 Triton. It is now a 4x4 7.3 I switched EVERYTING over from a rolled 7.3 Ex. 95% of this is working just working out the last few bugs, this little piece of the harness was not on the truck I got though. Thanks for the help in advance...
There is a rubber body plug behind the pass taillight if you were not optioned with park assist, if you do have the park assist than the hole in the body has a pass though harness for the bumper sensors.
Thank you for the response... I have the back up sensors in the bumper but it plugs in down off the left frame rail. Is park assist different than the back up sensors? I do have the big square plug like you have but I don't have the harness that plugs into it and goes below, but something was definitely plugged into it
Yes it looks just like the lower picture, except the plug that plugs into it and goes down is missing. The back up sensors plugs into the frame plug on the driver side rear frame rail. Or at least there is a plug there for it. I believe it is round
The one from inside is there, as well as the speaker inside and a black box by the rear A/C. I just don't know where the writing goes when it leaves this plug, or how it all ties together. This is the wiring for the frame i have a plug that will plug into the bumper harness, the trailer connector, and the tail light harness This is the inside wiring on the rear bumper with sensors
I would like to know where that harness goes and plugs in down below. I pulled my bumper and I have 2 square plugs and a round
I move so fast on the work I do on my X that what I remember is here today, and gone tomorrow. I added the Park Assist to my X recently. I had to find and replace the rear frame harness which includes the plug up to the pass taillight. I obviously had turn signals before. I think I remember that the park assist rear frame harness included the taillight plugs too. I was confused in the junkyard as the park assist harness went from the inside rear ac quarter, through the body behind the taillight, across the rear frame and up the drivers side frame to the transmission. The transmission sends a signal down the drivers frame rail harness, across the rear frame, and up to the PAM (park assist module). There was a main square plug for the rear frame harness (around the drivers taillight) that included the taillights, and return wiring for the park assist connecting to your empty plug behind the pass taillight. It is this harness that you probably need.
Look at my thread, I have a pic of my original non park assist harness still installed, and the new park assist/taillight harness strung out where it's supposed to go. I think that my parts X still has this rear end harness I can part with.
Man thanks so much for your help, this is EXACTLY what I needed!!! You said you may have an extra set of those wires possibly? I would only need the out side parts. My Ex is an 2000 4x4. Thanks for sending me that link I read through it and got all the info. What a great write up. I have also been fighting corrosion in a few of my plugs and using Deoxit. I live in AZ, if you have them would you mind shipping them? Let me know what you are asking for the 2 harnesses
You'll have to send me a PM, but I think you'll need at least 10 forum posts to do that. I think if you click on my profile name you can send an email instead.
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