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Installing a Brake Controller on 2008 GMC Sierra  

Question:

Do you know what type wiring harness that I can use for connections in a 2008 GMC 3500. I want to use the P3 controller. I wanted a quick plug and play. Thanks

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Expert Reply:

There is not a plug and play option for your Prodigy P3 # 90195 on a 2008 GMC Sierra though you will need harness # 20127, which plugs in the P3 but needs to be connected to the wires under the steering column. If your Sierra has the factory trailer connector you will not need to do anything else; if it does not, you'll need to complete your wiring with a 7-way connector by using # PK11898.

I've added a link to a help article on installing a brake controller in a Sierra for you to take a look at.

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Kyle S

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