I am sure that is case on some items, but my 2013 sport has the connector coming off the main harness for the electric discos used only on the rubicon. I would think the power windows.door locks etc would be a sub harness off the main harness but I am only guessing based off other vehicles I have worked on.

 

Maybe I'll tear it back apart and pull out the ol' multimeter to figure out what it is. The wire could prove to be very useful for aftermarket lights if its original purpose was to power fog lights.

Anyone else have ideas or solid knowledge about this wire?

 

I would say this is it. Just unused in this case because you don't have the fog lights

 

Even if it is the OE foglight circuit, It would be a lot of trouble to make it useful. Purchase and install the OE lighting stalk. Reflash the ECM. Now you have spent about $300 and don't even have any lights.

 

How would it be difficult to use

 

Wouldn't it just provide power and ground? if you wanted a separate switch you should be able write one in with no issues.

 

- I thought that this was pretty clear. -

 

I just upgraded bumpers too, and I have this harness I had to detach and re-attach using zip ties. I believe it is wiring for the headlights/signal circuit that runs across the frame in front. The wiring for the fog lights is not provided if your build didn't include it, because the wiring would also have to tie into the fog light switch on the light switch on the steering column (which we don't have). I ended up running an entire new relay circuit for the fog lights when I switched bumpers, it's not hard, add a relay near the battery (fused of course), wire a switch in the cab that will activate the relay (I powered the switch off of the left cig lighter wiring) then run power wiring from the relay to the fog lights (At this time I also added a set of windshield lights since I was wiring things up and adding switches .

You can buy a fog lights wiring kit from mopar that I believe plugs into the harness/fuse block somewhere and has the appropriate lever for the steering cloumn, but it's near $300, and wiring the lights myself cost more like $40. If you want to skimp you can run to the pull a part and snatch up a bunch of wiring and most likely a relay or two and some switches even cheaper.

 

My 2012 2 door jk with fogs has the same wiring. There are a lot more wires in there than fog lights. One of the wires is for the driver side wheel speed sensor. There are two other wires in there beside the fog light wires. They might be for the vacuum pump on the left frame rail. I have not opened up the harness, and traced all the wires yet. I really don't know why they run the wheel speed sensor up there. When I replace the factory fogs with glass ones, I was going to move the extra wires back to the frame cross member. Your harness might just have the extra wires, and not the fog light wires. I wish Chrysler/Jeep hadn't stopped selling service manuals for there vehicles. The wiring diagrams were nice to have.

 

Great feedback guys, thanks much.I think the pick and pull might be a good option for harnesses on a budget...though I won't know the history...think I will go with relays, switches and wires like back in the day. Thanks again.