Do I Need To Use Additional Tow Lights When Towing A Car On A Tow Dolly?
Updated 09/02/2025 | Published 06/30/2025
Question:
If my tow dolly plugs into my 4 pin flat, how will I plug in additional lights for the tow vehicle?
asked by: Tom
0
Expert Reply:
Hello Tom, thanks for reaching out. If your tow dolly already has brake lights that are DOT compliant, you actually would not need to add additional lights.
If you still want to add a separate set of tow lights, the best way to do this is using the 7-way plug on your RV. Since the 4-flat is already taken, you can use an adapter for your 7-way like part # 37385 to hook up the additional 4-flat.
expert reply by:
Jesse M
0
37385
(click to enlarge)
(click to enlarge)
Product Page this Question was Asked From
Universal Magnetic Tow Lights - Red LEDs - 20' Wiring Harness with 4-Way Flat Trailer Connector
- Flat Tow Wiring Harness
- Bypasses Vehicle Wiring
- Removable Tail Light Kit
- Universal Fit
- 4 Flat
- Peterson
more information >
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on Flat Tow Wiring Harness
on Flat Tow Wiring Harness
Jesse M.
9/2/2025
Hey Tom, did you decide to use the 7-way plug adapter for your additional tow lights, or did you find another solution? I'm curious to know what worked for you, as it could help others with similar setups.