Testing trailer plug with multimeter the easy way
If your trailer lights are acting up right before a big trip, testing trailer plug with multimeter is probably the quickest way to figure out if the problem is with your truck or the trailer itself. There's nothing more annoying than getting the boat hooked up or the camper loaded, only to realize the left turn signal is dead or the brake lights are flickering like a haunted house. Instead of blindly swapping bulbs or wiggling wires and hoping for a miracle, you can use a basic multimeter to find the culprit in about five minutes. ...