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  1. #1

    Default 08 Silverado No aux power to 7 pin plug

    I am trying to get aux power to my 7 pin rear plug for charging trailer batteries, so I installed the 40 amp fuse and connected the red/blk wire from the wiring harness between the fuse box and fender well to stud 1. I am getting a good voltage reading at stud 1 in the front of the fuse panel after 40 amp fuse was installed but when I go to the rear bumper and check the voltage in the 7 pin plug I get 0.00. Any suggestions Please help.

  2. #2

    Default

    Thereils another wire den there one is trailer brake other
    aux pwr
    2000 sierra 1500 5.3
    k&n cai
    hypertech programmer
    flowmaster catback
    7" lift 456' s. 35/12.5 nitto teragrapplers
    roll bar. Baha spare tire holder
    brush guard custom tail lights
    full sound system dvd nav

  3. #3

    Default

    not for charging trailer battery's it will kill your starter batter battery.read your manual( auxiliary battery)

    wire for 7 pin hooked up+ wire I added. brake wire on right.

    http://

  4. #4

    Default

    Thanks ghotachevy and wayned found it and it works like a charm

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