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Installing Square 6-Way Trailer Connector On 2009 Ford Flex To Match Trailer Wiring


can this be done?


Expert Reply:

If your trailer has a square 6-way connector I assume it has brakes. The other wire would perhaps be for a breakaway kit or interior lights on the trailer or a battery charger.

If the trailer is setup with either of those functions, you will need to change the 4-way on your 2009 Flex to match the trailer.

I recommend part # 37995. This has the trailer and vehicle side 6-way square connectors. You would need to remove the 4-way connector on your Flex and wire those wires to the 6-way. You would then need to run the Blue wire from the 6-way on the vehicle up to the front and to the brake controller. The remaining Red wire if needed would be run to the vehicle positive battery post using an inline fuse.

If your trailer does not have brakes or a need for 12V power I recommend installing part # HM48110.

I have attached a link to a helpful article you can check out.

expert reply by:
Jeffrey L

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