Can Demco LED Tow Light Bar for Towed Vehicles Charge Towed Vehicle Battery When Used
Updated 04/07/2026 | Published 04/03/2026
Question:
I’m a little confused about the outgoing electrical pins on the transmitter that plugs into the motorhome’s 7-pin. I want to use the 12V pin in the 7-pin to keep my toad’s battery charged while on the road. What is a good way to do this with that transmitter in place?
asked by: Ed M
Expert Reply:
Hey Ed, the trailer wiring portion of the Demco LED Tow Light Bar for Towed Vehicles w/ Wireless Transmitter # DM36MV that you referenced can allow the 12 volt charge circuit to pass through. It would plug into a 7-way but the output side is a 6-way round which is a style of connector that has enough pins for a 12 volt charge circuit. What are you flat towing?
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Product Page this Question was Asked From
Demco LED Tow Light Bar for Towed Vehicles w/ Wireless Transmitter - 12V Power
- Flat Tow Wiring Harness
- Bypasses Vehicle Wiring
- Removable Tail Light Kit
- Universal Fit
- 7 Round
- Demco
more information >
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on Flat Tow Wiring Harness
Ed M.
4/7/2026
Thanks for the reply, Jameson. I tow a 2016 Lincoln MKX w/Roadmaster Even Brake and Roadmaster battery charge line kit.