Using C56407 Trailer Wiring w/ TR118821 Taillight Diode System While Flat Towing 2019 Jeep Wrangler

Question:

My 2020 wrangler unlimited already has the curt 56407 wiring for its trailer hitch installed. What do I need to do to add the 118821 wiring to this setup to allow for the towing of my jeep by my motorhome and not impact the existing trailer lighting setup? I have already purchased all parts needed for my jeep and motorhome from etrailer. Thanks

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Expert Reply:

In order to install the # TR118821, you will need to do a little splicing but the easiest and safest way to do that would be to tap into the wires on the Curt # C56407, the procedure for this is shown in the instructions for the # TR118821, which I've linked for you. Installing in this manner will not harm the trailer wiring harness in any way.

I've linked to some videos that you might find helpful.

expert reply by:
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Mike L

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