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How to Connect Magnetic Trailer Lights with 4-Way Connector to RV with 7-Way Connector for Brakes

Question:

RE: Optronics Trailer Lights TL21RK comes with the 4-pole flat connector. I have a round 7-pin connector on the RV that connects to the tow dolly and also incorporates a Primus IQ Brake Controller. Any suggestions on how to mate the flat connector for the magnetic tow lights?

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Expert Reply:

In order to connect the Optroncis Magnetic Tow Lights # TL21RK to the 7-way trailer connector on your RV you would need to cut off the 4-way on the lights and wire them in to the existing 7-way on your tow dolly (If there is one) or add a new 7-way connector # H20046.

You'll need to wire the brake circuit wires on the dolly to the # H20046 as well so the 7-way on the dolly will be fully functioning. If you prefer it might be easier to use a 7-way with a junction box # e99011.

expert reply by:
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Charles S

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