OK....I'm showing my Stupidity here by asking this question. My brother-in-law sold me his 22 foot travel trailer and said I'd have to get electric brakes for my truck so I can stop while towing the trailer.......Here is the question: How do you use the thing? The guy at the hitch and trailer place just put it on under the dash and gave me the package it came in and off I went. I just thought you just hooked up the trailer and the brakes worked on it when you pressed on the pedal in the truck. It has this thing called Sync control and manual control?? Give me some pointers guys.......how do I get this thing to work right without jack knifing my rig?