I just received the injector harness and the hot-wire kit from racetronix. The injector harness is self explanitory, but on the hot-wire harness, I have a few ?'s I know where the hot wire, ground, relay and fuse holder go but what are the other 2 plugs for. One is a female and the other male. Someone mentioned to me that one of those plugs might be a signal wire for a FAST system.......a simple set of instructions sure would have been nice.