I picked up a 99 bayou 220 a couple years ago for cheap, put it back together as a beater for my son. He rides the hell out of it. A couple weeks ago it won't crank, push the button it does nothing. He's been pull starting it. I can jump across the two large terminals on the solenoid, basically going straight to the starter, and it starts fine. How do I test the solenoid? There are only 3 wires, 1 hot, 1 ground, I thought the last one was the trigger but apparently not. Any ideas? Thanks