Yopar

Does anyone know how to wire up an LED light so it's ON at all times, except for when the vehicle is running? I think a relay can be used with a signal from the IGN to kill the power to the LED when the truck is running, but I'm not sure how to do it. Any ideas?

If you're wondering why, this is for an "alarm" blinking LED that I want to be on unless I'm driving; also, I don't want a switch for it, rather it be automatic.

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'87 4runner: fresh 22RE .020, 261c, OME springs/shocks, SDORI, relaxed Ts, 4.88s, front Lockright, marlin 1200 clutch, 16" Tacos, 255/85 bighorns, LCE header, magnafloW
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"The Federal Reserve pretends to fight inflation but actually creates it. Inflation is the most insidious tax of all." --- ABOLISH THE FED

rowdy235

Get a normally closed relay. Tap in to the "on" circuit, ground the other switch post, then run a wire from the battery through the relay to the light. Then the light will be on until you turn the key to the "on" position.

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Daily Driver: 1982 Toyota Pickup Base 2WD 22R, TRD Cam,5-sp Manual, Toyota Truck Nation High Miler- 300k+
MPG: 25/32

Off-roader: 1990 Honda H3011SA Riding Lawnmower, 11hp OHV engine, Carlisle SNOW-HOG Tires
MPG: 1 Day of "Wheeling" per gallon

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Yopar

Cool thanks, I'll try that out.

__________________
'87 4runner: fresh 22RE .020, 261c, OME springs/shocks, SDORI, relaxed Ts, 4.88s, front Lockright, marlin 1200 clutch, 16" Tacos, 255/85 bighorns, LCE header, magnafloW
---------------------------------------------------------
"The Federal Reserve pretends to fight inflation but actually creates it. Inflation is the most insidious tax of all." --- ABOLISH THE FED

Yopar

Looks like I can just use a standard Bosch SPDT relay, and use pin 87a for the normally closed circuit.

http://www.coolcatcorp.com/faqs/relays.html

__________________
'87 4runner: fresh 22RE .020, 261c, OME springs/shocks, SDORI, relaxed Ts, 4.88s, front Lockright, marlin 1200 clutch, 16" Tacos, 255/85 bighorns, LCE header, magnafloW
---------------------------------------------------------
"The Federal Reserve pretends to fight inflation but actually creates it. Inflation is the most insidious tax of all." --- ABOLISH THE FED

Noltz

^^ that's exactly what I was about to post. You can do that with no trouble.

Curious: Why the constant on? Alarm LED? Interior fan?

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