This is the OEM / Factory set up for trailers from my 1990 FSM. Note that they used a flat-5 connector instead of the typical flat-4 plug that 99% of the known universe uses. I don't know if newer XJ's came with the flat-4... The 7-conductor schematic is typical although you'll find that some agricultural / horse trailers are wired differently.

OEM Cherokee trailer wiring diagram
Click here to print or view diagram from larger pop-up window.

Here's a scan of the "instruction sheet" that came with my utility trailer's flat-4 wiring kit. (Retouched for clarity.)

Generic 4-wire trailer wiring diagram.
Click here to print or view diagram from larger pop-up window.
Set Printer to "LANDSCAPE VIEW" to print full page diagram.

If you have pics of your own repairs or can suggest other methods - please contribute your ideas (and pictures) to this article!

Revised on: November 19, 2006

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