wiring relay to turn of tag lights

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jaxon1023

Member - Posts: 16

Joined: October 23, 2010

Location: Florida, United States

Posted: October 23, 2010 at 4:25 AM / IP Logged

I want to mount my backup camera in a hole i'm drilling in my liscense plate but my tag lights shine right into it, how would i wire a relay to turn my tag lights off while in reverse and then back on when i go into drive. thanks for the help

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howie ll

Pot Metal - Posts: 16,466

Joined: January 09, 2007

Location: United Kingdom

Posted: October 23, 2010 at 6:56 AM / IP Logged

Cut feed to tag lights, car side to 87a, bulb side to 30, reversing wire to 86 and ground to 85. Place a diode 1N4004 across 85 and 86 with the diode band towards 86.

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jaxon1023

Member - Posts: 16

Joined: October 23, 2010

Location: Florida, United States

Posted: October 23, 2010 at 7:58 AM / IP Logged

Thanks!

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jaxon1023

Member - Posts: 16

Joined: October 23, 2010

Location: Florida, United States

Posted: October 23, 2010 at 8:40 AM / IP Logged

By reversing wire do you mean the positive wire from the reverse light?

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howie ll

Pot Metal - Posts: 16,466

Joined: January 09, 2007

Location: United Kingdom

Posted: October 23, 2010 at 9:31 AM / IP Logged

Yes.

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jaxon1023

Member - Posts: 16

Joined: October 23, 2010

Location: Florida, United States

Posted: October 24, 2010 at 12:03 AM / IP Logged

howie ll wrote:

Yes.

What's the diode for?

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howie ll

Pot Metal - Posts: 16,466

Joined: January 09, 2007

Location: United Kingdom

Posted: October 24, 2010 at 2:35 AM / IP Logged

To stop feed back, read the sections here on relays and diodes.

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howie ll

Pot Metal - Posts: 16,466

Joined: January 09, 2007

Location: United Kingdom

Posted: October 24, 2010 at 2:39 AM / IP Logged

Look specifically for the diagramme showing "normally closed starter interrupt". Read Tag lights for starter, that's what you're doing.

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jaxon1023

Member - Posts: 16

Joined: October 23, 2010

Location: Florida, United States

Posted: October 24, 2010 at 9:10 AM / IP Logged

Ahhh I didn't catch the a on 87. Thanks

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wiring relay to turn of tag lights

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