01 honda crv 12v positive ignition source

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shinjukumaster

Member - Posts: 2

Joined: February 22, 2007

Posted: February 22, 2007 at 3:58 PM / IP Logged

I'm a noob here. I searched but could not find. Where can I locate a 12V (+ve) source that is hot only when the engine is running? This is distinct from the ignition key/accessory source. The application is a piggyback ECU and the vehicle on this occasion is a 2001 Honda CR-V 2.0ES with the fuel injected B20 engine.

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KarTuneMan

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Joined: December 14, 2004

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Posted: February 23, 2007 at 3:09 PM / IP Logged

12 VOLTS

White

Ignition harness

IGNITION

BLACK / YELLOW

Ignition harness

ACCESSORY

Yellow

Ignition harness

STARTER

BLACK/ white

Ignition harness

KEY SENSE

Blue/white

Ignition harness

TACH SIGNAL

Blue

At 1-pin tach test connector

Located on firewall above master cylinder. (see photo)

You choose......

shinjukumaster

Member - Posts: 2

Joined: February 22, 2007

Posted: February 23, 2007 at 3:25 PM / IP Logged

Thanks. OK, there's a few to choose from. I don't think I can use tach. But which of the others will be hot 12V +ve with the engine running and drop to 0V if/when the engine stalls? Basically this is a requirement for a 'run' only signal for safety reasons - to shut off a gas (LPG) ECU.

Installer_mss

Copper - Posts: 221

Joined: February 14, 2005

Location: United States

Posted: February 27, 2007 at 12:04 PM / IP Logged

the ECU should have a tach input and see that the engine has stopped and in turn shut off the pump

"If a man made it, another can modify it...it just takes some thinking."

"If you ask questions, you're a fool for 5 minutes; if you don't, you're a fool for a lifetime."

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01 honda crv 12v positive ignition source

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