After watching them try and tow with an '85 chevy truck, and clearly not knowing anything about a truck that is more then a few weeks old I can't stand watching them anymore. Come on, a small block chevy not reving past 4000? Listening for an analog brake controller? They are older than I am, and I know that the humming brakes are PWM modulated but the analog system tied into the brake system is pure analog. At least I am not old enough to have had to deal with vacuum trailer brakes. And taking very simple trailer wiring that was working pretty good and completely butchering it. A day to install a tach on an HEI chevy, the distributor that happens to have a dedicated "tach" terminal on it.