A quick and easy solution to the old problem of forgetting your lights.
It took about 10 minutes and $8 to do this from scratch, including the relay for the running lights to take the load off of the switch.
I already had installed relays for the high and low beams, triggered by the original headlight wiring, and fed directly from the alternator.
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Comments on this article –
I just want to clarify that this circuit requires that headlight relays must be used, else the headlights will draw power through the ignition switch.
Drawing power off the white wire or the white wire with the green stripe is optional. White is ignition, and white/green is the accessory circuit for the wipers and heater fan. Only enough current to run the relays will be drawn off of this circuit, and the main power for the running lights will still come from the brown battery circuit, through the relay, instead of through the light switch. I recommend to install additional relays on the headlight circuits (high and low), otherwise this modification would cause your headlights to draw all their power through your ignition switch.
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