i am curently trying to figure out why i have no spark on my 94 sport jet 90 i found that i have 265mv on the kill line going to the switchbox is this ok or will it kill the swichbox ?
You should never see voltage on a kill wire. You either have a problem with the ignition switch or you are picking up voltage from another wire in the harness or terminal board.
One way to determine where the voltage is coming from is to disconnect wires one at a time on the terminal board.
