4 Prong Trailer Wiring Diagram Separate Turn Signals. Rather than installing the turn signal converter inside the. Looks like most diagrams use a turn signal and brake as the same wire.
It gets complicated when you have trailers with more cables, and in this case, you need an adapter to make the connections. Referring to a wiring diagram for a trailer comes in handy during installation. Connect the white neutral wire to the silver-colored (neutral) terminal on the outlet.
Behind the converter box, check that the signals go to the converter box from the truck or car.
The other vehicles would lose their stop lights only and turn signal and running lights would work, unless I wired electric brakes into the stop light.
The trailer with a four wire plug only uses the white wire for ground, the brown wire for the running lights, the yellow wire for the left signal and brake Sounds as though you shunted one of the hots or the neutral. Wiring your four-pin trailer can be a challenge when you first do it, but it's a simple do-it-yourself task. According to all wiring diagrams I could.