I have a 1973 Evinrude, 130 HP. When we bought it this summer it ran just fine but needed a new starter. We took it out several times then the starter quit working so we replaced it. It still wouldn't start because the solenoid was bad so we replaced that. Then it wouldn't turn over and we replaced the ignition switch. Now it still won't start - we have enough voltage to the solenoid for it to start. I'm stumped and so is everyone that I know - do you think its the wiring? or is it something else? 