Re: Force 50 starting problem
Try using a multimeter to trace the power in the switch circuit.
Set it to volts DC. Disconnect the yellow wire from the starter solenoid so you can turn the key without the starter working. Negative from the multimeter to the negative battery terminal. Then use the positive lead from the multimeter to test different points along the circuit to see if the power is still there. Eg. From the ignition switch first, then follow the yellow wire to just before the next item in the circuit and test again. When you loose power the thing you are testing is faulty. Once you have repaired this move on until you reach the connecter that was off your starter solenoid.
Check to see what voltage you are getting at terminal C (diagrams next post) on the starter solenoid when you turn the key. You should have close to 12 volts.