Upfitter Switch Question

LVTWG

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I want to connect a cig lighter/charger cup to an upfitter switch. There is only one wire (positive) from the switches under the dash. The cig adapters have a positive and a negative. Do I just connect the negative to metal like a ground?
 

LVTWG

SDD Junior Member
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May 19, 2012
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Las Vegas
YES! Ground is the negative for the entire truck.
Awesome. Thank you. After I sent this message I realized that anything you attach to those switches (lights, etc) will have a positive and a negative wire. So I guess they all would just have the negative go to a ground.
 
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