Trunk Relay Assistance Needed?

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=27398
Printed Date: July 15, 2025 at 8:16 AM

Topic: Trunk Relay Assistance Needed?

Posted By: Trav3D1
Subject: Trunk Relay Assistance Needed?
Date Posted: February 28, 2004 at 2:30 PM

I have just installed a Prestige Platinum APS 996 in a 1995 Mercury Grand Marquis. Everything is working just fine with the exception of the trunk release. I hooked up a relay using the wiring detail in the installation manual, which indicated the following.

pin 86 - dark blue wire delayed 300mA pulsed of alarm, pin 85 - fused 12volt source, pin 87 - to the vehicle trunk release (purple / YELLOW) wire, and pins 87a and 30 - fused 12volt source since this vehicle circuit switches 12volts when the trunk button is pressed.

I did notice that the (purple / YELLOW) wire is unusually thick, which makes me believe that I cannot simple tap into the wire.

Any suggestions would be greatly apprecitated. Thanks

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Trav

Replies:

Posted By: JMaxx93
Date Posted: February 28, 2004 at 4:05 PM

it is a five wire trunk release meaning you cna't simply tap into the wire. 87a must go to the switch side of the purple / YELLOW and 30 to the actuator side of purple / YELLOW 85 & 87 get 12v and 86 gets the dark blue wire from the alarm.

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Posted By: JMaxx93
Date Posted: February 28, 2004 at 4:07 PM

make sure you cut the purple / YELLOW wire completly also. you might have assumed that but i didn't want to cause more confusion.

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Posted By: Trav3D1
Date Posted: February 29, 2004 at 8:59 AM

Thanks, I will try this and see what happens

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Trav

Posted By: draasch
Date Posted: February 29, 2004 at 11:34 AM

Trunk Release PURPLE / YELLOW (+) HIGH IN DR. KICK PAN ON CON BRACKET * #232

* With OEM Keyless Entry, PURPLE / YELLOW Wire Rest At Chassis Ground, Should Be Wired As A Reversal Rest At Ground Circuit (Cut Wire, Switch Side To Pin #87A, Motor Side To Pin #30, 12VDC Constant To Pins #87 & 86, (-) Trunk Release Output From Alarm To Pin #85).

https://wiringinstructions.com/232.htm

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Good Luck
David
Ace Security
813-376-9778
Tampa
Donate to the 12volt

Posted By: webnetxpress
Date Posted: February 29, 2004 at 12:18 PM

well, i just finished this on my 97 Crown Vic (did not have keyless OEM, just power locks)- if yours was the same as mine, you do NOT want to cut the purple / YELLOW, just tap into from 30 on the relay. My Rattler 369D instructions and their tech support told me to cut it and wire one side to 87A and one to 30. Alarm pulse to 85 and 12v+ to 87 & 86. I did it this way, the remote would pop the trunk but now the dash mounted button would not.

I followed David's advice (Ace Security) and wired it per https://wiringinstructions.com/231.htm (I had to reconnect the purple / YELLOW that I had cut). Now it works perfectly- both the remote and the button will pop the trunk.

I have no idea why DEI tech support tells you to cut the wire, all that I know is it wouldn't work that way... Hope this may help since our cars are the same wiring...