2005 Chevrolet Impala, Compustar
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=87977
Printed Date: May 09, 2024 at 8:13 AM
Topic: 2005 Chevrolet Impala, Compustar
Posted By: nei00755
Subject: 2005 Chevrolet Impala, Compustar
Date Posted: December 29, 2006 at 8:02 AM
I did a remote start install in a 2005 Chevrolet Impala yesterday. I could not get the Trunk release to work at all. I tried everything!!! Well at least it felt like I tried everything. Does anyone know the relay setup for this. I was doing 87 & 86 12V, 85 Alarm Output, 30 Trunk release switch. It sounds like the relay may click but it is real weak. I don't know what I did wrong. GRRR. Now I found out the guy wants the stupid horn honk hooked up too, so I need a relay diagram for that too. I did some searching and basically found all the stuff I have already tried, so I figured I would post. Any help would be greatly appreciated.
Replies:
Posted By: KarTuneMan
Date Posted: December 29, 2006 at 8:10 AM
My tech info says the trunk pop is NEG(-) It's a black wire at the BCM, in the 16 pin gray connector, pin A4. You need to tell us what YOU tagged on to. -------------
Posted By: nei00755
Date Posted: December 29, 2006 at 8:23 AM
Sorry, Yes, the black wire that I tagged onto is "Trunk/Hatch Release black - BCM, gray 16 pin plug, pin A7" I pulled that off of this website. Is it supposed to be pin A4 on the 16 pin connector instead??
Posted By: KarTuneMan
Date Posted: December 29, 2006 at 8:29 AM
Remember...test the wire with your DMM before throwing any voltage....
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Posted By: xtremej
Date Posted: December 29, 2006 at 9:42 AM
Purple with white off of compustar is neg. output for trunk. Horn honk is white also neg trigger shouldn't need a relay for either, and always verify with a dmm before you tag it.
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Posted By: nei00755
Date Posted: December 29, 2006 at 2:40 PM
I have another dumb question. How can I test the violet/white wire on the compustar with a DMM to see if it is operating correctly, both standalone and when the button is pressed on the remote?? I have been trying everything to make this work and I just seems to be not working for me. I have a bad feeling that something may be malfunctioning in the brain of the unit. Thanks in advance
Posted By: Chris Luongo
Date Posted: December 29, 2006 at 7:20 PM
Easy.
Set meter for voltage. Put red meter probe to constant power. Put black meter probe onto Compustar's trunk-release wire. Observe meter while operating remote.
Regardless, the BCM on that car is in a sucky location to work, and going there is entirely unnecessary.
You can get trunk release right at the switch on the dash. As others have said, straight negative trigger; no relay.
Posted By: nei00755
Date Posted: December 30, 2006 at 12:30 PM
Thanks. I know that is how to test it, but I don't know what readings I should be seeing, Sorry I should have been more specific?? I get 12Volts all the time, and then when I hit the remote it drops off to 7 Volts and then goes back up to 12 Volts. I don't know if my meter isn't fast enough to go all the way to zero during the pulse or if it never makes it there. Also, I don't know if that is the readings I should be seeing in the first place. Thanks
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