I would have pointed that out in your other thread, but it appeared you had already ordered the Prodigy.

I saw this thread and I thought I would give a plug to some of the other controls besides Tekonsha.  We sell Tekonsha controls and have for many years, but sometimes people tend to think they are the control manufacturer.  Two controls that have been tested with high regards is the MaxBrake hydraulic/electric control and the Valley Odyssey II control.  If the MaxBrake is out of your budget you should really take a look at the Odyssey II.  Here are a few reasons why. 

360 mounting, polarity protection, illuminate tail lights when manual override is compressed, four preset memory settings + four boost settings, compatible with electric/hydraulic, small enough to fit in your cubby hole, stick on or screw on bracket, and will handle electronic down shift. These are few features this control can do that the Prodigy series can not.

Just thought I would give some of the other brands equal time.

Darrick Sweeden Southwest Wheel Company Proud Sponsor of HorseTrailerWorld.com

"Did you ever figure out if you were getting juice to the controller from the truck's brake light circuit?"

Yes, my husband came in shaking his head just 2 days ago, saying that he'd put the tester on and there was power everywhere it was supposed to be.  We bought the truck used and there was a wiring harness there from the last controller, and this is what the current one is wired into.  I think his next planned step is removing a panel to verify where those wires are going. MY next planned step is to connect to the trailer one more time, and go through all the basic steps for levelling the sensor and setting the power level.  I feel like Clark Griswold trying to figure out why the christmas light won't work.

Here is a video for you to watch...

http://video.aol.com/video-detail/prodigy-brake-controller-ford-f250-etrailercom/1050596884

I think I've been told this before.But,I think my husband is a little leery and not very confident to try this,either.So,here goes.

We have a brake controller,so,we are wanting to upgrade to one of the P3's or other proportional  boxes.We have a Chevy Silverado 1T,so,with the proper corresponding wiring harness,do we just: unhook the old one,mount the new one,and plug it in? I think he'safraid we might hook it up wrong and fry the whole thing,or go down the road with 3H LQ+2 horses+ tons of other stuff and all of a sudden,NO BRAKES because we did something that goofed it up.

SOrry,but you know,unfortunately,not everyone is real mechanical on here.I'm a little better at it than he is.If you say so,I'll at least take your word for it,and give it a try.Worth it not to take it to a customized truck accessory place and pay bookoos for THEM to plug it up you know? Then laugh about it in the breakroom afterwards.

You have a Voyager, correct?  Brakes dont work with application of pedal, correct?  No reason to trace the wires, if the brakes work with the manual slide and he confirmed there is power from the trucks brake pedal then the wiring must be right.  Looks to me like there are 2 likely problems,

A.  Controller is bad.

B.  Controller needs leveled?

I was thinking we'd mount it where the old one is now.?

In her earlier thread, http://www.horsetrailerworld.com/forum/thread-view.asp?threadid=8686 (which it is actually an Envoy not the Voyager, although the two are close enough) the controller is doing everything its supposed to (green light, works with manual lever) except working with the brake pedal.  There is also confirmed power from the brake pedal according to this thread.  No reason to check trailer plug, fuse or other wiring.  I would put BIG money on the controller needing to be leveled per the instructions, Ive seen this before.