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Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!ZJ (93-98), WJ (99-04), WK (05+)
All ZJ/WJ/WK specific tech questions asked here!
Yes, there is a plug and play wiring module that plugs into the main connector behind the cargo side panel. I'm not sure which side it's on in the WJ, but it's behind the driver's side panel in the XJ. All you do is separate the main connector and plug the module in both sides of the harness. U-Haul sells aftermarket modules and the dealer may not have them anymore. Maybe they do since this trailer hitch callback thingy.
There is a pigtail connector ready for connecting a trailer lights module. It is located behind the rear drivers side cargo area panel. There is a choice of one or two plug n play modules. I used a universal part from the auto parts store, and spliced it into the wiring at this same connector for trailer lights on my WJ.
04-30-2020, 08:54 AM
1999 trailer wiring harness
