You'll have to rectify and regulate the alternator's output, so either a zener and old style rectifier, or a modern solid state regulator/rectifier.
From there, you have a hot wire. Just wire each light to receive power from each switch (on/off, hi/lo and brake light switch). Each of those switches receives power either directly from the hot wire (brake light), or through the light switch (all other).
Horn gets it's power from the horn button, which gets it's power through the keyswitch, but can also be "hot wired" if you are doing without the keyswitch altogether.
I'm not sure about these modern ARD mags, but the old ones required grounding to "kill" them, so you needed to have a keyswitch with a "normally closed" set of contacts to kill the mag when you turn the key off.
ALL components are either grounded through their mounting, or a "return" wire to the common Red wires in the harness, which are all grounded to the frame & engine.
From there, you have a hot wire. Just wire each light to receive power from each switch (on/off, hi/lo and brake light switch). Each of those switches receives power either directly from the hot wire (brake light), or through the light switch (all other).
Horn gets it's power from the horn button, which gets it's power through the keyswitch, but can also be "hot wired" if you are doing without the keyswitch altogether.
I'm not sure about these modern ARD mags, but the old ones required grounding to "kill" them, so you needed to have a keyswitch with a "normally closed" set of contacts to kill the mag when you turn the key off.
ALL components are either grounded through their mounting, or a "return" wire to the common Red wires in the harness, which are all grounded to the frame & engine.