What's the tool to check dual valves???
#1
What's the tool to check dual valves???
Hey, can someone please tell me what tool is to be used to check if the dual valve from a car at the junk yard works? Someone on here recomened that I try to get one from a junkyard first, but I forgot what the tool he said to use to check if they work first. It was supposed to check voltage or something I guess.