Quote:
Originally Posted by Stump Jumper
I have all of the wires connected except the brake light wire because I can't figure out where to connect it on the 7 pin. Ideas? Thanks.
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A standard 7-blade RV-type connector doesn't have a separate brake light wire. Like the 4-pin connector, the brake lights are a function of the left and right turn signal leads. The 3 additional wires over and above those listed for the 4-pin connector are:
1. Trailer BRAKES - this is not a brake light wire, but actuates the brakes on the trailer through a trailer brake controller (if installed) on the tow vehicle
2. Battery +12VDC - this charges the trailer battery that powers the trailer brakes in case of a breakaway situation
3. Auxiliary - the large round center pin, generally used for backup lamps if the trailer is so equipped.
Rusty