Buck Mccovey

It's a 2000 and where is neutral switch I've changed the solenoid and also the relay

Hi all I was give a king quad 300 and the ignition was gone and no battery so I purchased both items and it still won't start the reverse or neutral lights will not light up so I went through the wire harness and check every break point and cleaned them and still nothing also tried the start in any gear mod with blue/black wire to ground and still nothing need help