Looking for an automotive (car/truck/van) solution assuming the vehicle has no original-equipment DRL.

Headlamp switch "off": DRLs are on.

Parking lamps on: DRLs are off, parkers + tails are on

Headlamp switch "on": Regular headlamps + tails, high or low beam per factory beam selector switch.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

From previous post (with some minor changes)

3 relays

Relay 1 (high)
Relay 2 (low)
Relay 3 (DRL)


Relay 1 wiring:

30 positive source
87 high filament
87a not connected
86 existing high filament wire thru diode & DRL control wire thru diode (1 diode per wire)
85 ground


Relay 2 wiring:

30 low filament
87 positive source
87a ground
86 existing low filament wire
85 ground



Relay 3 wiring:

30 lamp ground only
87 not hooked up
87a ground
86 DRL control
85 ground

There needs to be one relay 3 per lamp. Relays 1 & 2 can handle both lamps.

Here's control circuit: (need 1 mini relay)

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Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

Sounds like probably what I'm looking for...any chance I could prevail on you for a complete circuit diagram? I don't need it for free, can work out a trade for bulbs or whatever...

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

I could come up with one. Any interest in solid-state control (a bit more complicated, but not much)?


I'll PM you when I come up with it (and for any deal making)

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Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

Sure, I'd love to hear about your solid state idea, too. Thanks!

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一期一会
Too many people who were born on third base actually believe they've hit a triple.