Ok I have a 85 h.p. 1974 mercury outboard with a thunderbolt ignition. It dose not get spark. I have replaced the wiring harness in the motor and the one going to the control box (wire rote). I did all the test in the book with no luck. I shorted out the wires on the switch box from the...
I would like to find the wiring Schematic for a 1974 mercury outboard 85hp with thunderbolt ignition. I dont have the serial number with me right now but I can get them if needed. Thanks :p