Where is the Cold Side Brake Wire on My Jeep Grand Cherokee for Installing Demco Stay-In-Play?
Updated 09/12/2025 | Published 05/26/2025
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Question:
I am having trouble determining the cold side wire of my towed vehicles brake light switch to connect the Wireless CoachLink in my 2020 Jeep Grand Cherokee Limited? The Jeep already has a Stay-In-Play DUO Would this be one of the wires that are going into the Vacuum Brake G-Force Controller II?
asked by: John W
Expert Reply:
Hello John,
You are not able to find it, because it is not there to be found on the 2020 Jeep Grand Cherokee. You will need to install the Roadmaster Stop Light Switch Kit # RM-751449.
Are you knew to flat towing, or getting a new vehicle set-up?
Product Page this Question was Asked From
Demco Air Force One Flat Tow Brake System for 2020 and Newer Tiffin Chassis RVs w/Factory Air Brakes
- Flat Tow Brake System
- Brake Systems
- Proportional System
- One-Time Setup
- Vehicle Battery
- Fixed System
- Power Assist Brake Compatible
- Air Brakes
- Indicator Lights
- Demco
more information >
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on Flat Tow Brake System
Kate F.
9/12/2025
Hey John, did installing the Roadmaster Stop Light Switch Kit help you get your Jeep Grand Cherokee set up for flat towing? I'm asking because your experience could really help others who are setting up their vehicles too.