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Pin-Out Wiring Diagram for a Trailer Side and Vehicle Side 7-Way Blade Style Trailer Connector  

Question:

I have a pollak 12-705 7 way female connector I need the wire chart to install the wires to the connector

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Expert Reply:

I can certainly help you out. First, I have included a link to our wiring FAQ article that shows how to wire both the vehicle side and trailer side connectors. The section you need is about in the center of the article and says 7 Way Trailer Connector followed by 7 Way Vehicle Connector. I will also give you a quick explanation below.

When looking at the back of the TRAILER SIDE connector where the wires attach:

1 oclock position (pin 4) = 12-volt battery power
3 oclock position (pin 6) = right turn and brake lights
5 oclock position (pin 2) = brake controller output
7 oclock position (pin 1) = ground
9 oclock position (pin 5) = left turn and brake lights
11 oclock position (pin 3) = tail and running lights
Center position (pin 7) = reverse lights

When looking at the back of the VEHICLE SIDE connector where the wires attach:

1 o'clock position (pin 3) = tail and running lights
3 o'clock position (pin 5) = left turn and brake lights
5 o'clock position (pin 1) = ground
7 o'clock position (pin 2) = brake controller output
9 o'clock position (pin 6) = right turn and brake lights
11 o'clock position (pin 4) = 12-volt battery power
Center position (pin 7) = reverse lights

if you need a circuit tester we have # PTW2993.

expert reply by:
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Michael H

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