So I ran something over maybe 40 miles ago. A rock, a curb, who knows. After leaving the car parked a work and restarting it 15 miles ago, the windshield washer fluid light came on. Got home... pulling just into the driveway and parking to empty the mailbox, I heard an odd noise from the front right wheel. Took a look. Nothing amiss.

Drove up the driveway and the car dies with a brake screech (wasn’t touch brakes). Got out and saw this..,



some chunk of the harness is ripped from the car, caught on the wheel, and rubbed through.

car won’t start. Take the key out... ooh yeah all the dash light are on with the key out. And the windshield washer fluid dumped right as it stalled.

So how was you day honey?

 

Maybe it’s worse than I thought. I’ve managed to run over and shred the wiring harness. Soooo much splicing to do. Not sure this is work doing on a $900 car.

 

might be easier to try and find that whole section of loom from somewhere with the connectors intact? Easy to say, hard to find I know...

 

Mine was like that on the right side as i purchased M'Lady P

We'll go through yours

There are some waterproof " environmental " splices on the shelf at a electronics store in Kansas City

Most of the wires are power wires to the lights and washer resivour and a few are sensitive engine regulation wires

Your connector to the cabin is the RS3 and I mapped it out as I jumperd around it until I sourced a replacement connector

There is a wire harness section on a salvage X300 in KC and your V12 has 2 extra wires that go as far as the Papa Indy 1 and 61

They went ahead and put these 2 wires in all cars

 

Lady P, thank you for your hugely encouraging post. I didn’t realize this section of wire was not “the whole harness” like on my older cars, but instead a replaceable sub harness.

Are you saying that an XJ6 harness will work on my XJ12? I looked at the parts manuals and can’t tell if they’re ignoring the XJ12, or if it’s the same part. My VIN is 766580 so part LNA3110CE for vin 746281 to 787956 would be what I need assuming that’s XJ12s too. There is an XJ6 in a yard nearby...

 

They went ahead and put the extra wires for the V12 in all cars in this sub - section of harness

At least that's what I found in my 1996 inline 6 # 755xxx

No hole to pull the section out through but just the wheel well liner

Best to label the end wires in groups and keep the end wires connectors like the 13 pin black one for the exterior lights and the resivor item connectors

PM me and I will mail you the paper wire chart as you hook it up ( not in computer form )'

See page 16 for wire color chart

http://www.jagrepair.com/images/Auto.../jagxj1996.pdf

 

Thank you all for your help. David Boger at everydayxj.com has mailed me a replacement harness for this area... so unless this wiring scramble caused computer damage, I think I’ll be able to fix it.

 

Contact me by PM if you run into issues

I'll show you how to reset the engine ECU to zero state as a base to work from if needed

PM gets my attention better

 

Put the harness in and it started right up! Ran out of daylight so there’s still stuff to do, but it ran. That harness goes everywhere! Couple of plugs in the footwell, huge ABS connector under the hood, then up front to a big bouquet of relays and connectors. Glad to have this car back on the road, on the cheap.