Curt or Tekonsha Trailer Wiring Harness Recommendation for 2021 Jeep Wrangler JLU
Updated 01/27/2026 | Published 01/01/2026
Question:
I am setting up a 2021 Wrangler JLU to flat tow behind a motor home. Will be using a Roadmaster Invisi Brake. Plan on using a Curt C96JR flat tow harness and a RM-88400 brake relay. My question is about adding a trailer light harness on the jeep for towing a small trailer when not being flat towed. Will the Curt 56407 or the T-One 118786 be the best choice?
asked by: Rick S
Expert Reply:
Hey Rick, I always recommend the Tekonsha trailer wiring harnesses like the part # 118786 over Curt harnesses as they tend to just be more reliable so that would be what I would recommend. Do you have a hitch already?
This harness will not interfere with your tow bar wiring either.
Product Page this Question was Asked From
Curt Custom Tail Light Wiring Kit for Towed Vehicles
- Flat Tow Wiring Harness
- Plugs into Vehicle Wiring
- Wiring Harness
- Custom Fit
- 4 Flat
- CURT
more information >
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on Flat Tow Wiring Harness
Jameson C.
1/27/2026
Hey Rick, how did things go with the Tekonsha wiring harness on your Wrangler? Did it end up working well alongside your flat tow setup? Your update could make it easier for others setting up a similar system.