Mopar flat tow wiring harness stopped working

[WGH 218]

Hi all,
This is my first post on this forum and thanks for letting me join.
I have a 2020 Wrangler 2.0. When I bought it I had the dealer install mopar 82216358AA. The system worked well for a few months and then the driver side running light stopped working. The directional and brake light still worked fine and the passenger side was unaffected. Recently the entire system both driver and passenger sides stopped working completely. I have power all the way to the five pin relay in both tail lights. After the relays I have nothing. I changed the three relays on the driver side and still nothing. anyone ever experience anything like this? or have an idea of what the remedy is?
Although fixing the Mopar unit is my first choice, as I headed on a trip in a week I need this issue resolved before I leave. To insure I have a fix, I just bought the Blue Ox BX 88368 EZ Light Wiring Harness. Before I change this harness does anyone know of a reason that this replacement will not work?

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[zb39]

Isn't your harness under warranty? i would have the dealer fix it. Mine has worked for almost 3 years, no issues. Towed many times. Good luck!

 

[WGH 218]

Isn't your harness under warranty? i would have the dealer fix it. Mine has worked for almost 3 years, no issues. Towed many times. Good luck!

I don't know if it is a warranty issue. I will try to get it into them soon as I am leaving Saturday morning. Thanks.

 

[RonAZ]

Have you checked the 12 volt fuse in the harness fuse box. The 12v is required for the relays to work. Just having the voltage for the lights will not work if the constant 12v is not present.

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