The Wilwood switch has an integrated red LED that lights up when the brake is on. No need for an extra light. It also an extra wire that can trigger a relay to illuminate the brake warning light in the dash (see photo below from my other Pantera). The second photo shows the what I think is the brake warning light on this car. I will test it in a few days.
This car's interior is ultra original and I am reluctant to modify it. In fact, I have been going the other way and undoing changes that were made to it. Next on my list is the shifter knob. The one you see in the photo has a flip up hatch that allows you to engage the nitrous system that I have removed from the equation.
For now I will put the parking brake switch in the cigar lighter hole and perhaps relocate it later.