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Just looking for advice. I know where the auxiliary switch input is and am familiar with the diagram. I’m just not sure how to cut the wire from the temporary switch that came with the light bar in order to plug it into the auxiliary. Does one of the wires have to be grounded? Thanks guys.
 

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I'm sure one of them does. You can either ground it to chassis or to the switch ground point. On mine, I just cut the hot wire, stripped a bit off and used a twist on connector to connect with the switch wires supplied with the truck. That wire has a blade connector you just plug into the switch connector.

EDIT: I'd cut out the switch personally.
 

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light bar needs positive and ground. ground the ground and run the power to the aux bank for corresponding switch number
 
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