horn honk?

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2muchfreetime

Member - Posts: 2

Joined: May 24, 2010

Location: New Jersey, United States

Posted: May 24, 2010 at 8:11 AM / IP Logged

I just purchased a 1990 mustang 7up convertable.I installed a autopage rs-915 LCD.All went fine except I want to use oem horn with siren.Manual says output wire is -200ma.The horn wire is - at steering colomn.My guess is I would need to use a relay.Can someone tell me correct way to wire relay if needed.

kreg357

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Joined: January 30, 2009

Location: Pennsylvania, United States

Posted: May 24, 2010 at 8:29 AM / IP Logged

R/S (-) horn output to Relay pin 85.

+12v constant to relay pin 86. (Fused at 2 Amp)

Chassis ground to Relay pin 30.

Relay pin 87 to cars horn wire.

Relay pin 87a is not used and should be cut and insulated.

Soldering is fun!

2muchfreetime

Member - Posts: 2

Joined: May 24, 2010

Location: New Jersey, United States

Posted: May 24, 2010 at 9:33 AM / IP Logged

Thanks very much for the info..I am so glad i found this site.I wish I knew about it years ago.

t&t tech

Platinum - Posts: 2,610

Joined: October 05, 2008

Location: Trinidad and Tobago

Posted: May 24, 2010 at 2:16 PM / IP Logged

You won't need that relay! If you're going to the trigger wire at the steering!

commit your way to jehovah and he will act in your behalf. psalms 37:5

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horn honk?

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