Ok I recently picked up a Teknosha Envoy Brake controller for my 2001 Chevy Silverado 1/2 ton. I went ahead and got the plug so it should have been a plug in and go deal. Well it wasn't, and I ended up wiring it up my self for the most part. Black wire to the Battery (with inline fuse), White to a known good ground, Blue wire to the trailer brake wire on the 7 way plug ( ran a new wire all the way down the frame to the plug at the back of the truck), and Red wire to the hot "when brake is pressed" wire. I hooked up the trailer and nothing, no LED on the controller on and when I hit the brake nothing from the controller. I took the fuse out of the Black wire and took a look at it, looked good. I left it out and hit the brake on the truck and the LED starting flashing quickly and it was Red. I know the wires are right and I also know the trailer brakes work on the trailer cause I have used the trailer with other trucks in the past. I need to figure this thing out before tomorrow evening cause I have to go pick up a truck 3 hours away and tow it home to fix the transmission on it. I would like to have brakes on the trailer. PLEASE HELP!!!!!!