Question: If I have a motec computer, do I still need switches to arm nitrous. I believe that the purge and bottle heater will need switches.

Answer by Dan Lesser:
This is a hard question to answer because without seeing exactly how this car was set up, or knowing the original builder and how they tended to build packages.

Answer by Tony Armour:
While the Motec may have available internal relays etc that “could” operate anything from the Motec itself or have the Motec turn on other heavier duty relays. I (and most everyone else) would want separate switches to arm, purge and for the bottle heater. Even if the Motec had control you would still have to move the/or some perimeter to make it work.