For the record, it's this U-bolt kit and this axle. I tried asking them directly, but they wouldn't write me back.

The problem I'm running into is that when I brake, the wheels stop, but the axle spins in the U-bolts. Not a lot, but enough to wrap the wiring around the axle and disconnect it the first time I brake hard.
I'm not sure if this is a situation where I simply need to apply more torque, or if I made a fundamental installation mistake.



