18. LIGHTS/INSTRUMENTS/SWITCHES/HORN ZING125 STARTER BUTTON Remove the decorative covers under the fuel tank. Disconnect the right switch wire coupler. 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 decorative covers under the fuel tank. Disconnect the left switch wire coupler. Check for continuity between the black and light green wires. Color Position Black Light Green FREE PUSH Black Light Green Horn Button Black Light Green HORN Remove the steering head decorative cover. 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 FUEL GAUGE 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 18-3