Help with infinity box wiring system installation

Yes you are exactly right on the switch. I was hoping someone has installed one of these systems in their mopar and could share what they did with the gauge lighting. The infinity system uses ground as an input to trigger outputs. In this case I would ground the B2 terminal and use r as my input into the infinity system. When it see's a ground there it provides power to that circuit. The problem with stock switch is the r terminal is connected to the reostat so that I can't put power to it for gauge lighting control. If I did it would burn out the input that is using the ground as a trigger. They suggest that you use a GM headlight switch that has an exposed copper trace that you can cut to separate out the reostat. I was hoping for a different solution.