17. LIGHTS/ SWITCHES ATV 150/125 Remove the bulb and check the bulb for Bulb damage. Replace with a new one if necessary. MXU 150: Bulb Socket Bulb Remove the bulb socket by turning it counterclockwise. Remove the bulb. Install the bulb in the reverse order of removal. IGNITION SWITCH MX'er 150/125: Check for continuity between the wires indicated below. Color Black Red Black/ Green Position White OFF ON 17-5