HI and thanks ahead for any advice. I just got a 1974 mercury 1150 and am wondering the exact wiring diagram I can find a few online but don't know if they are exact I don't want to fry anything . I have cut the harness from the ignition before I spend any money can someone walk me through how to wire up without an ignition and how to check output of the switch box and everything else I have checked compression and seems to be fine thanks
