Description
If the wires on your unit are different colors than the install video above, the best way would be to test the wires using a 12V source, which you can do using the battery, or a 12V household battery. If not, the turn signal and ground wire will be pretty obvious, as you only need to follow the wires leading to the turn signal in the tail lights. The black one will be the ground. For the parking and brake, of the three wires going to the brake light, the red will most likely be the brake. But again, it’s always best to test the wires.