I've been looking at the wiring diagram to try and figure this out. It's a 91 EXT special. So for the handle bar kill switch to work do the carb switches need to be hooked up? As far as I can tell in order for that switch the carb switches need to be turned on for that kill switch to be able to kill the engine. I thought the carb switches would just kill the engine and that switch would also do it, they don't rely on each other. Right now I have them bypassed but I'm curious if I decide I want that handle bar kill switch.