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7 way trailer plug


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Posted

The number 4 position on the seven way plug is to recharge the trailer battery. Where is this wire powered from on the truck. Anyone know?

Posted

From the GM Upfitter electrical publication:

 

The C/K trucks are shipped from the assembly plant with the trailer Battery Hot lead disconnected. To provide power to the trailer hot

lead, the 40 Amp Maxi-Fuse must be connected at the Stud #1 location in the Underhood BEC.

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