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You just need four connections with this circuit, you'll use it to interrupt the power to the HID lights shown at the green and orange markers, and connect to your starter motor at the pink marker, and ground at the black marker.
The starter motor pulse when you push the start button energizes the upper relay in latching configuration (this can be just a small relay).
When you release the starter, the pink marker immediately becomes a ground, and provides the 12V differential across the coil on the bottom relay to switch it on.
Note it's the bottom relay that needs to be large enough to handle whatever you're switching. I have it controlling all the lighting on the bike, along with the HID headlights.
When you switch off the bike, the power is cut off from the green marker, and the relays open up, and you're back where you started.
I have another modification to it that adds an extra delay after the starter button is released before switching on the headlights, in the event your bike isn't running well enough to start on the first crank. Mine starts on the first crank cycle so I haven't bothered changing it yet.
