It doesn't replace any existing boards, it is just wired in. You can ignore the lighting features and just use the smoke features. If you look at the basic Installation Schematic in the instructions, you will just need to wire six wires to the Super-Chuffer.
- Pin-1: Track power (roller)
- Pin-2: Track power (wheels)
- Pin-5: Chuff In (parallel with existing chuff switch)
- Pin-6: Smoke Motor negative terminal
- Pin-9: Smoke heater Hot lead
- Pin-10: Smoke Motor positive terminal