After looking at some online wire diagrams of a Lance truck camper, it looks like there are the wires to power the A/C unit, which come from the breaker, and then these wires, that you can hook to the A/C if you want to have a wall mounted thermostat. I only have the wall control for the heater. The A/C doesn't have the ability to have a wall mounted thermostat, I believe, so I shouldn't need these wires. I wish I could push them back into tube farther so I don't have to clip them, but I may have to. Thanks.