R&D Fog Light Controller

rbumpus · July 15, 2004

Any ideas where to get one?

http://www.gm-trucks.com/IAR_Foglight.shtml

MountaineerTom · July 15, 2004

I'm pretty sure the company went out of business. I've seen people selling used ones every now and then.

Sorry

99silveradoz71 · July 16, 2004

I'd have to think that one of our electronic wizards here could dissect one and come up with a schematic for how to create your own...but who shall be up to the challenge?

GnatGoSplat · July 16, 2004

I already have a schematic that I've given out to a few people. I'll see if I can dig it up.

It doesn't turn on the foglights automatically with the headlights, it ONLY turns on the foglights automatically with the headlights IF you left them on when you shut off your truck. Basically, it works like the factory foglights using the factory switch, only thing is it has memory.

rbumpus · July 16, 2004

That will work.

MountaineerTom · July 17, 2004

I wouldn't mind having a copy of that schematic too Shawn, in case my R&D kit ever craps out.

Thanks.

Send to [email protected]

SoylentGreen · July 20, 2004

How about a schemo for the 99 Auto Door Un-Lock?

MountaineerTom · July 21, 2004

Sorry, I put my e-mail address down wrong.

The correct one is [email protected]

GnatGoSplat · July 22, 2004

I think it will just be easier to post it here:

Foglight Controller Schematic

Completed circuit board

Bottom of circuit board

Installed into the BCM

The chip in the schematic (U1A/U1B) are the flip-flops of a single 4013 chip. The circuit board I built it on is a generic one from Radio Shack. I installed it into the BCM so I wouldn't have to modify any wiring. Diode D2 can be omitted if you don't want the high-beams coming on to disable the foglights.