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Adding 4-Pole Trailer Connector to 2009 GMC Sierra Equipped with Factory 7-Way Connector

Question:

Hi, Im interested in buying the twist on Pollak Custom Fit Vehicle Wiring for the 2009 GMC Sierra but need to then convert it to a 4flat plug for a small trailer. I like have the option of using both but also like the easy twist in mounting of this. Is there an adapter cable I can also purchase to go from the 7round to the 4flat?

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Expert Reply:

There's a few different ways you can do this. For the easiest choice, you can use a simple adapter like # PK12716. Simply plug it into the 7-way then plug the 4-pole connector for the trailer into the adapter.

Another option would use the # 118384 4-pole connector. This 4-pole would plug inline between the vehicle wiring harness and the twist-in # PK11916 7-way. This would provide you with an always functioning 4-pole connector, and you wouldn't need to fool with an adapter.

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Mike L

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