avital 2101

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=127474
Printed Date: May 14, 2025 at 5:50 PM

Topic: avital 2101

Posted By: dusty6967
Subject: avital 2101
Date Posted: May 27, 2011 at 7:34 PM

I installed an Avital 2101 Keyless in my 94 Mustang GT. I have everything hooked up but trunk release and horn honk. They both are a negative 300ma trigger output. I used relays to change polarity to positive and it still will not does not work. I am using a siren instead of horn honk but when I trigger remote I still have no output when testing after the relays with test light. What am I doing wrong?

Replies:

Posted By: kreg357
Date Posted: May 27, 2011 at 9:15 PM

The horn is a straight (-), Yellow wire to the right of the steering column. Relay conversion to (+) isn't needed.

The Trunk Release is (+), Purple / YELLOW low in the Drivers Kick Panel. Wiring for the relay should be:
Relay Pin 85 to Avital Trunk Release Output
Relay Pin 86 and 87 to +12v constant thru 20A fuse
Relay Pin 30 to Mustang Purple / YELLOW Trunk Release wire
Relay Pin 87A not used - insulate

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Soldering is fun!

Posted By: dusty6967
Date Posted: May 27, 2011 at 10:50 PM

This is the way I wired the relay, i got this from this site

pin 86 & 30 to fused 12 volt +
pin 85 to negative trigger
pin 87 to trunk wire
pin 87a not wired

are they wrong

Posted By: dusty6967
Date Posted: May 27, 2011 at 10:51 PM

here is the link to their diagram

https://www.the12volt.com/relays/page1.asp

Posted By: howie ll
Date Posted: May 28, 2011 at 4:16 AM

Kreg and your relay diagrams in this case are BOTH correct but I would modify them to retain the circuit and protect your alarm's circuitry.
Cut trunk release feed, then:
Switch (front end) side to 87a.
Trunk side to 30.
RED / white from Avital to 85 via a 1N4004 diode, band towards relay.
Constant 12V+, fused at 15amps to 86 and 87.

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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.