Wiring diagram Aermacchi Harley-Davidson M-65 Leggero (1970)

Nederlandse versie

The electrical system of the Aermacchi Harley-Davidson M-65 Leggero from 1970, drawn circuit by circuit. Each wire is labelled with its colour.

Always check a wire with a multimeter before you connect it, and disconnect the battery first.

Circuit 1Power from the batteryThe positive goes with the blue wire to the rectifier and through the fuse with the green wire to terminal 3 of the ignition switch. The negative goes to earth.
bluepositivegreen3Ignition switchRectifierwith coil, diode and fusecolour?negEarthframe or engineBattery
Circuit 2ChargingThe red wire from the generator goes to the rectifier. It charges the battery with the blue wire.
redlower coilredbluepositiveBatteryRectifierTerminal blockGFlywheel generator
Circuit 3IgnitionThe black wire goes through terminals 6 and 5 of the ignition switch to the coil. The coil gives the spark to the plug.
blackpoints6black5blackHT leadearthSpark plugIgnition coilleft terminal earthedIgnition switchterminal 6 and 5 closed with ignition onGFlywheel generatorgreenupper coilgreenIgnition coilleft terminal, also earthedTerminal blockGFlywheel generator
Circuit 4LightingThe red wire feeds the handlebar switch. It selects high or low beam. The warning lamp gets power through the headlamp.
redredblackredearthWarning lamphigh beamHeadlamphigh beamwhiteHeadlamplow beamHandlebar switchTerminal boardRectifier
Circuit 5Tail light and clocksThe brown wire from the handlebar switch feeds the speedometer lamp and terminal 1 of the ignition switch. Terminal 2 feeds the tail light with the yellow wire.
brownbrownearthSpeedometer lampbrown1yellow2earthTail lightIgnition switchterminal 1 and 2 closed with ignition onTerminal boardHandlebar switch
Circuit 6Stop lightTerminal 4 of the ignition switch feeds both stop light switches with the green-black wire.
green/black4green/blackgreengreenearthStop lightTerminal boardStop light switchfrontgreen/blackgreengreenearthStop lightTerminal boardStop light switchrearTerminal boardIgnition switchterminal 4
Circuit 7HornThe red wire feeds the horn. The grey wire goes through the terminal board to the button.
redgreygreyHorn buttonin the handlebar switchTerminal boardHornTerminal board
Read this firstWatch out forUncertain colours and terminals
  • Switch table in the book: park 2-3, ignition 1-2, 3-4 and 5-6.
  • The inside of the handlebar switch is not shown in this diagram. Check with a meter which terminals are connected in each position.
  • The book does not say which wire is high and which is low beam. Where this page does say so, it was worked out from the warning lamp. Check it at the headlamp.
  • The negative battery wire has no colour code in the book. That is why it says "colour?".
  • The book does not say how the horn button makes its earth. Check with a meter.
  • The book shows the terminal block between generator and rectifier with two red terminals that are connected.

Our own drawings per circuit. The connections are based on the workshop manual for this model. Not an official publication of the manufacturer.

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