XtremeAmazing Ignition CDI Box Module Unit for 2 Stroke Polaris Scrambler Sportsman Predator 50cc 90cc 100cc 110cc ATV for ATV 4 wheeler on Polaris, Eton, Extreme, Sunray, SunL, Eton , Kasea Artic Cat & DRR 2-stroke Yamaha Jog engine on 50cc 90cc 100cc & 110cc 2 stroke models. Instruction: Orange & black are in a plastic plug together, then Black/white, black/red, white/red. The Gray on your model wire does not have to be used for the ATV to run as it is a ground wire.