I know this appears to be a Ruckus forum but, I seem to be chasing my tail. I have a 02 Metropolitan I acquired for $100. Turn the key on the headlight goes on and off, hit the start button and the relay just clicks. I can bypass the relay and it turns over but, no spark or fuel pump. I replaced the starter relay and main relay and still have the same issue. I have also replaced the ECM. What am I missing????

 

On my thread someone had mentioned the brake switch is also an important part for starting the motor. I'm looking to buy one for my starting issue to see if it works for me.

 

You're going a little overboard here. Why the ECU? Try getting it running before that. Clutch switch, ignition switch Comes to mind. Usually when they fail it's not all at once, It's intermittent You can jump the clutch (I'm assuming it's a stick?) It's two wires normally on/off simple. You did not specify if you had the lights on while attempting to start? Bottom line: IGNITION SWITCH! You can also jump the solenoid at connections and if it cranks you know your good there. (have key on the damn thing just might start).