Alternating light flash with relays

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titanium

Member - Posts: 2

Joined: January 14, 2003

Location: Canada

Posted: March 16, 2004 at 8:24 PM / IP Logged

I have a postitive light flash wire from my alarm I would like to get my park lights and my head lights to flash alternating and I'm not quite sure how to wire this with relays

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its_radio_shop

Copper - Posts: 76

Joined: March 16, 2004

Location: United States

Posted: March 17, 2004 at 9:57 PM / IP Logged

Its possible to do but some questions would be...

Negative or Positive headlight system? Negative or Positive Park lights? Are the two high beams isolated from each other (require a seperate output for each lamp)? I would probably look into buying a seperate headlight flasher and wiring the control wire to the output of the alarm. Much easier and cleaner.

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auex

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Joined: December 23, 2002

Location: Arizona, United States

Posted: March 17, 2004 at 10:40 PM / IP Logged

It is easy and requires 2 relays.

Relay 1:

85 - +siren output from alarm

86 - ground

30 - constant +12V

87 - +output to relay 2

Relay 2:

85 - +light flash output from alarm

86 - ground

30 - +output from relay 1

87A - either parking lights or headlights

87 - the one not used from pin 87A

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its_radio_shop

Copper - Posts: 76

Joined: March 16, 2004

Location: United States

Posted: March 17, 2004 at 11:37 PM / IP Logged

The setup auex shows will only work if you have positive switching headlights and park lights. Some vehicles will be negative in one or the other or both. In most cases even with negative switching headlights you will still have positive switching park lights. Try to determine what you have before hooking anything up.

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loco_k0pykatz

Member - Posts: 1

Joined: March 23, 2004

Location: Canada

Posted: March 23, 2004 at 12:19 AM / IP Logged

How would you make 2 fog lights flash alternately?

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Thanasi

Member - Posts: 1

Joined: March 27, 2004

Location: United States

Posted: March 27, 2004 at 2:14 PM / IP Logged

The same way you would with your parking lights or headlights using two relays.

Relay 1:

85 - +siren output from alarm

86 - ground

30 - constant +12V

87 - +output to relay 2

Relay 2:

85 - +light flash output from alarm

86 - ground

30 - +output from relay 1

87A - either parking lights or headlights

87 - the one not used from pin 87A

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werox709

Member - Posts: 4

Joined: May 26, 2004

Location: Mexico

Posted: May 26, 2004 at 1:26 PM / IP Logged

ok thats one way but hopw to do it if i dont have a car alarm????

can any one help me with that???

"WErOx"

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Alternating light flash with relays

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