A wet kit is a good investment if you are only spraying a 75 shot. Like everyone else said, a window switch is a good idea. Another good idea would be a fuel pressure safety switch, so if your fuel pressure drops too low while running the nitrous, it will kill the nitrous. If you wanted to be a real freak about safety, then you could get a wideband commander. It will cut the nitrous if your A/F goes too lean which is an awesome feautre...too bad a wideband commander is $450.00.