Adapter to Match Trailer with 7-Way RV Style Plug to SUV with a 4-Pole Flat Wiring Harness  

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Expert Reply:

If your trailer uses a 7-way blade style plug and your SUV tow vehicle has a 4-pole flat trailer harness you will need to either rewire one or the other, or you can use an adapter to mate the different connectors. The linked article will show you all common connector types.

We offer the Hopkins # 37185 which plugs in to your SUV's 4-pole and converts its signals into the 7-way RV-style format. Do note that the additional functions on the 7-way-equipped trailer will not be active since the additional signals on a 7-way (trailer brakes, 12V power, reverse lights) are not supported by your vehicle's 4-pole wiring. The Hopkins adapter includes additional wire leads with butt connectors to allow you to make the additional circuit connections for those functions.

expert reply by: Adam R

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