Testing trailer brake controller....
Been working on this for days. I'm about ready to start screaming. (FYI, I am not in a good mood and any trolls looking to unload shaming or sarcasm or just generally embark on some kind of self-serv...
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Forget about measurements. Use a bottle jack to raise one wheel just enough to be able to spin that wheel. Have some one step on the brake pedal while you are spinning the wheel. If it locks, repeat with the other wheels. That will tell you if the brakes are actually working, not just if you are getting power out.
