Hello everyone I am a senior and I just bought my first motorcycle. I was wondering if anyone out there could help me out? I would like to add passing lights to the motorcycle. I would like to wire them to a switch on the handle bar so I could turn them on and off from there. The trouble I am having is I don't know how to go about wiring the lights to make them work. Any advice would be much appreciated. Thanks. Tom
@midrider2 welcome man and congrats on the bike! im not sure what passing lights are, i only run a headlight and tail light on my bikes but any local shop shoul dbe able to do this for a song, you basically need a relay, a switch, and some wiring chops.
get a relay like this -

bolt everything up where you want it. decide where youre gonna hide your switch.
then build your relay circuit:
- Terminal 30 (Power In): Run a heavy-gauge wire from the positive (+) battery terminal through an inline fuse directly to Terminal 30.
- Terminal 87 (Power Out): Run a wire from Terminal 87 to the positive (+) power wires of your passing lights.
- Terminal 85 (Ground): Run a wire from Terminal 85 to a solid bare-metal frame ground or the bike's main green ground wire.
- Terminal 86 (Switch Trigger): Run a wire from Terminal 86 to one side of your handlebar toggle switch. Connect the other side of the switch to a switched 12V source (such as the accessory wire or tail/running light wire) so the lights cannot be left on accidentally when the key is off
- Connect the negative (-) wires from each passing light to a solid frame ground or tie them into a clean green Honda ground wire
- Double-check all crimps, connections, and heat shrink.
- Reconnect the negative (-) battery terminal.
- Turn the ignition key to ON, flip your new passing light switch, and verify the lights turn on correctly without dimming the main headlight.
i hope that helps man! enjoy the ride!