Thanks folks, I really appreciate the help however I still cannot find a reference to the pinouts. I may endup using a circuit tester to find out. Here is what I'm looking for:

The wire colors and pinouts for the Tekonsha Prodigy controller are as follows:

Black - Battery+
Red - Stoplight
White - Ground
Blue - Brake

The BMW 4 pin connector wire colors that BMW provides as part of the hitch wiring for the brake controller are as follows:

Red
Yellow/red
Yellow/green
Brown

I need to find out how those BMW wires map to the Tekonsha wires. I already have the Tekonsha Prodigy which is identical to the "factory BMW" controller.

Thanks,
Jim