Re: 78 evinrude 35hp + postive wire
If nothing happens when trying it, it's an open circuit. If it smokes, it could be a short or high resistance in the wire and then yes, you would need to replace it. You can try bypassing it all by using a jumper cable (from a car) from the battery to the starter. If it works fine then checking/replacing the wires is probable if you're sure the solenoid is working.