18. LIGHTS/INSTRUMENTS/SWITCHES/HORN/ FUEL UNIT Pulsar CK 125 STARTER BUTTON Remove the headlight. (Refer to 18-1.) Disconnect the starter button black and yellow/red wires. Check for continuity between the black and yellow/red wires. Color Position Black Yellow/Red FREE PUSH Yellow/Red Black Starter Button HORN BUTTON Remove the headlight. (Refer to 18-1.) Disconnect the horn button black and light green wires. Check for continuity between the black and light green wires. Color Position Black Light Green FREE PUSH Light Green Horn Button Black HORN Disconnect the horn wire coupler. The horn is normal if it sounds when a 12V battery is connected across the horn wire terminals. Replace the horn if it does not sound. FUEL GAUGE Remove the seat. (Refer to 4-8.) Disconnect the fuel gauge and fuel unit wire couplers. Connect the fuel gauge green wire with the yellow/white wire. Turn the ignition switch ON and the fuel gauge is normal if its needle moves from E to F and then moves from F to E when the ignition switch is turned OFF. Fuel Gauge Wire Coupler 18-4