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7-Way 12 Volt Circuit on a 2007 Ford F-150 is Not Working  

Question:

I followed mike H on his info for splicing in the wires and all is great except the 12v auxiliary power id dead no juice. I am thinking a fuse or relay but the owners manual does not state aux trailer power in its description. help

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Expert Reply:

I assume that you are talking about the 12 volt circuit on the 7-Way. The auxiliary power would be the center pin if used as such. Otherwise it is for reverse lights. But if you are talking about the regular 12 volt circuit then you might need to be looking for not only a fuse but a relay as well.

The 12 volt circuit on a 2007 Ford F-150 uses fuse location 106 (trailer tow BAT charge) and relay location R05 (trailer tow BAT charge). If the fuse is missing it takes a 30 amp fuse. If the relay is missing you will need to obtain one from a Ford dealer.

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Michael H

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