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?
Upfitter Switch Question
- Thread starter LVTWG
- Start date
DaveBen
SDD Senior Member
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.
DaveBen
SDD Senior Member
Positive goes to the switch and negative goes to ground. 
