John Deere L120 won’t start, no headlights

[jchamer904]

My John Deer L120 won’t start. Lights will not come on. Battery voltage measures 12V. I cleaned the battery terminals. Still won’t start. I discovered the fuse near the solenoid was bad so I replaced the 20A fuse. Tried to start. Heard some clicking (solenoid I guess?) and saw sparks coming from negative terminal. Then nothing after that. I replace the selenoid. Still won’t start and still no headlights. This seems to be an electrical issue of some sort. It should not be spark plugs as I don’t think it even gets that far.

 

[tom3]

Turn on the headlights, wiggle the battery cables at the terminals. Not unusual for the cable end to get corroded in the terminal. The sparks were telling you something, maybe?

 

[bertsmobile1]

And the spark plugs do not work off the battery.
If battery voltage gets to the coils it destroys them.