An electrical diagram would let you know how the lights on the dash are wired...but good luck finding one :hissyfit: Most lights, such as a brake light, have an end switch mounted near linkage which depresses the switch when engaged. The 3510 does not have a switch installed, and would require mounting one somewhere that would physically function correctly. If you make a habit of depressing the brake pedal momentarily to release the brake before using the hst pedals, you wouldn't need a light. I do not have a service manual, but an online search might turn up how the circuit could be wired, I wouldn't try taking off the dash just to explore the possibility.