How do you test an electrical outlet on a trailer?
How do you test an electrical outlet on a trailer? How to Test a 4-Prong Trailer Connector PlugTell your helper to turn on the ignition while you go to the connector plug. Tell your helper to turn on the right turn signal. Tell your helper to turn on the left turn signal. Tell your helper to shut off the turn signal and step on the brake. Why are the interior lights on my trailer not working? Your trailer could also have a fuse/power distribution box that might have a blown fuse for the interior lights. You could also simply have...