97 grand marquis trunk problem
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=112304
Printed Date: June 11, 2024 at 2:28 AM
Topic: 97 grand marquis trunk problem
Posted By: 94chevytruck
Subject: 97 grand marquis trunk problem
Date Posted: March 12, 2009 at 2:30 PM
Im in the process of installing a remote start alarm in a friends 97 grand marquis but am having a problem with the trunk solenoid. I wired up a relay between the output wire of the alarm and the trunk release wire. its wired like this: (-) alarm output - 85 purple / YELLOW trunk wire - 87 12 volt (+) from constant feed in ignition harness - 86, 30 everytime i try to activate it, the starter/alternator fuse blows. Should i take the 12(+) straight from the battery? I figured the ign. harness would be able to handle the draw of a stock trunk solenoid. Am i missing something here? ------------- If it aint broke...fix it till it is!
Replies:
Posted By: howie ll
Date Posted: March 12, 2009 at 4:16 PM
Is the purple / YELLOW positive going towards the trunk and if so does it sit on ground or nothing? Does it go straight to the solenoid which is then grounded on the other side? I would take a15amp fused permanent feed to 87 and 86 and take the output from . As it happens your relay set-up is correct, it's just everyone seems to take 30 as the output, although in your case 30 and 87 are interchangeable. One more thought place a diode across 85 and 86 with the band towards 86 (pos).
Posted By: Mike M2
Date Posted: March 12, 2009 at 4:39 PM
Wasn't those old Crown Vic's 5 wire for the trunk pop? I think they were. You need to cut the purple / YELLOW and put the trunk side to 30. car side to 87a, 12volts to 87. This will stop 12volts from backfeeding to the car itself...
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Mike M2
Tech Manager
CS Dealer Services
Posted By: howie ll
Date Posted: March 12, 2009 at 5:22 PM
Thanks Mike M2 that's what I was leading up to with my "sitting on ground" question, let's face it, I don't even know what a Grand Marquis is! Saab 900/9000 were the only others I can think of with a 5 wire, the question being why? It's so unecessary.
Posted By: Chris Luongo
Date Posted: March 12, 2009 at 5:56 PM
It probably has factory keyless entry. Does it have the keypad on the driver's door?
It should be like this:
85: trunk release output from alarm
86, 87: fused 12 volts
------cut car's factory trunk wire in half----
87a: "dashboard side" of trunk wire
30: "trunk side" of trunk wire
Posted By: Mike M2
Date Posted: March 12, 2009 at 9:10 PM
Dunno why, some new cars are still this way like the Camry....
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Mike M2
Tech Manager
CS Dealer Services
Posted By: 94chevytruck
Date Posted: March 16, 2009 at 10:56 AM
Thanks for the response. Ill try hooking it up like this and tell you how it worked out.
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If it aint broke...fix it till it is!
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