Can the 2024 Jeep Wrangler Curt Flat Tow Harness Work with Demco Stay-IN-Play Brake Kit

Updated 10/30/2025 | Published 10/09/2025

Products Featured in This Question

Curt Custom Tail Light Wiring Kit for Towed Vehicles

(280)

$96.73

Demco Stay-IN-Play Duo Braking System for RVs w/ Hydraulic Brakes - Wireless Monitor - Proportional

(827)

$1425.00

Roadmaster Single Park Light Diode

(136)

$21.23

Question:

Can you this wiring on Demco stay and play duo with out adding diodes. You have a video out that says you can not but your adviser’s say you can witch is it

asked by: Terry M

Expert Reply:

Hey Terry, thanks for reaching out!

Yes, the Demco Stay-IN-Play Duo # DM86VR wiring can be spliced into the Curt Custom Tail Light Wiring Kit # C96JR but you'll need to add a Diode # RM-690 to each circuit to avoid backfeeding.

So this will work, but without using the diodes you run the risk of the backfeed happening.

An alternative wiring harness that has a module built in to help prevent backfeed is the Hopkins Custom Tail Light Wiring Kit # HM39VR.

Does that help at all?

expert reply by: Jon G

Jon G.

10/30/2025

Hey Terry, did adding the diodes with your Stay-IN-Play Duo and Curt wiring kit solve the backfeed issue? Knowing how that setup worked could really help others wiring their towed vehicles the same way.