Iam having trouble getting a kill switch to work on a 3.5 hp Tecumseh I hooked a new kill switch to an insulator block on the motor where a wire is attached coming from the fly wheel area. When I push the switch the motor keeps running. I ran a jumper wire from this same block and touched to the engine block while it was running and it stopped right away. Does this mean the kill switch is faulty? I mounted the switch on the handle bars and cleaned the area where it ataches to bare metal any ideas ?