circuit open light on?

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eddiec

Member - Posts: 22

Joined: December 24, 2003

Location: United States

Posted: April 23, 2008 at 9:05 PM / IP Logged

Is there a way to wire a light so that it will come on when a circuit is open and off when the circuit is closed?

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KPierson

Platinum - Posts: 3,527

This member consistently provides reliable information

Joined: April 14, 2005

Location: Ohio, United States

Posted: April 23, 2008 at 9:36 PM / IP Logged

Yes.

An easy way would be to use a relay. When the circuit is open the relay won't be energized. When the circuit is closed the relay will be energized.

More information about what you are trying to do might lead to a better answer.

Kevin Pierson

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eddiec

Member - Posts: 22

Joined: December 24, 2003

Location: United States

Posted: April 23, 2008 at 10:10 PM / IP Logged

Sorry, I will explain. I have an old jeep that has a lot of its original wiring missing. I am trying to get the backup lights to work. The wiring diagram looks simple enough. Red wire from switch to hot in run. White with tracer from switch to backup lights. The only problem: when I wire it up, the lights are on in every gear BUT reverse. First I thought maybe the switch was bad but the new switch is the same way. I thought maybe I missed something but thats it. How would I wire a relay like that?

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eddiec

Member - Posts: 22

Joined: December 24, 2003

Location: United States

Posted: April 23, 2008 at 10:58 PM / IP Logged

Thanks for pointing me in the right direction. Using the information on the relay page I was able to figure it out. circuit open light on? -- posted image.

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eddiec

Member - Posts: 22

Joined: December 24, 2003

Location: United States

Posted: April 24, 2008 at 10:42 PM / IP Logged

Is it possible that a single throw relay can have two 87 pins?

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KPierson

Platinum - Posts: 3,527

Joined: April 14, 2005

Location: Ohio, United States

Posted: April 25, 2008 at 5:54 AM / IP Logged

Yes, they make them with two 87 pins.

Kevin Pierson

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circuit open light on?

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