Joe,
Yes I disconnected the wire at the powerpack and tested the wire coming from the key switch. I will disconnect from the key switch and see if it originates from the m terminal. There are no other wire's connected to the black/yellow wire at the switch. I have the oem manual for the engine and it does not say anything about testing this circuit for voltage. I will look into purchasing a new dual switch assembly.
Haffiman
I had problems with the thermostats and replaced them. I have a infared temp sensor and they are reaching normal operating temperatures(145) when measured at the thermostat pocket. Changed Impeller last year. Used evinrude tuner and decarb 2 months ago. I have decided not to go with NGK and have stayed with champion.
I dont think my problem is fouling plugs but something different. My port motor is running great now (sounds strong, has alot of power and will rev to 5500 rpm at wot) my stbd motor will only rev to 5000 and sounds like it is struggling. I think it is not running on all 4 cyl's. I am getting good spark on all cyl's. I'm going to go through the link and sync one more time to see if it helps. If not I'm going to rig a switch to ground the spark plugs one at a time while I running at wot the find the offending cylinder. All of the following has been done/replaced to each motor:
Fuel Lines, Fuel Filters, Carb Rebuild, Spark plugs, Spark plug wires, Thermostat, Water pump, link & Sync, De-carb, Vro Removed, primer ball, Timing.