I have a 1992 150 Xr4 that was running fine but now won't start. First clue was the motor trim seem to stop working at the controls but works at the motor. Battery seems to be fine, radio works and power trim on the motor works. I'm thinking it could be the solenoid or the starter. When I turn the key nothing happens not even the tone before it starts cranking. How can I isolate what is wrong?

