Where Does White Wire Attach for the Demco Coachlink Transmitter
Updated 10/27/2025 | Published 03/15/2025
Question:
I have the demco wireless transmitter. The red wire is attached to the one of the wires coming out of the transmitter. The other wire is missing. Which wire coming out of the transmitter should I connect a replacement wire to? Thanks
asked by: Scott
Expert Reply:
Hey Scott, thanks for reaching out!
The Demco Wireless Coachlink Braking Monitor # SM99945 transmitter only has the 2 wires; a white one, and a red one (see attached photo). Since your red wire is fine, you'll be adding your replacement wire in place of the white one.
I'm not sure what braking system you have, but I'm attaching wiring diagrams for both the Air Force One and the Stay-IN-Play DUO for your reference.
Hopefully this answers all of your questions! Let me know if anything else pops up!
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Product Page this Question was Asked From
Demco Wireless Coachlink Braking Monitor for Flat Tow Brake Systems
- Accessories and Parts
- Flat Tow Brake System
- Brake Monitoring
- Transmitters
- Demco
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Jon G.
10/27/2025
Hey Scott, how did things go after you replaced the missing white wire on your Demco Wireless Coachlink transmitter? Your update could make it easier for others working through the same wiring issue.