- Joined
- Sep 25, 2020
- Messages
- 186
If a trailer has 4 pin it does not have electric brakes. 4 pin is lights onlyI have a fancy 7 way to 4 way conversion adapter, and verified the brake circuit has power to the correct pin.
U hauls use hydraulic surge brakes that are mechanical. No electric, no wires, no brake controler. That's why a uhaul can be towed by any type of vehicle.