trunk release? 1999 regal + viper 4103xv
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=133752
Printed Date: May 15, 2025 at 5:46 PM
Topic: trunk release? 1999 regal + viper 4103xv
Posted By: sootah
Subject: trunk release? 1999 regal + viper 4103xv
Date Posted: March 02, 2013 at 1:19 PM
Hello again everybody,
I need to finally get my trunk release hooked up to my Viper 4103XV so that I don't need to pack my other fob around with me. Thanks to this forum I have the remote starting working along with the door locks, I just need to get this last bit done and I can at last get my dash put back together. :)
I have a 1999 Buick Regal, but the wiring info I've found hasn't said anything on how to do the trunk release.
Thanks again!
-Sootah
Replies:
Posted By: kreg357
Date Posted: March 02, 2013 at 2:07 PM
Here is some info from various sources :
Trunk Release BLACK/ WHITE (+) AT SWITCH Audiovox
TRUNK RELEASE BROWN (-) (Requires #775 Relay) @ RELAY BEHIND GLOVE BOX Bulldog Security
Trunk Release BLACK/ WHITE (+) REAR BODY HARNESS IN PASS. KICK PANEL Omega
You will need to test these wires with a Digital Multi Meter. Probably the BLACK/ White at the switch will be the
easiest to find, verify & use. You will need a relay to convert the 4103's H1/7 RED / White (-)200mA Trunk Release
output to the (+) signal the Regal needs. SPDT 30/40 Amp relay wiring as follows :
Relay Pin 85 to 4103 H1/7 RED / White
Relay Pin 86 and Pin 87 to +12V fused @ 10 Amps
Relay Pin 30 to Regal BLACK/ White at Trunk Release switch ------------- Soldering is fun!
Posted By: metz35
Date Posted: March 02, 2013 at 5:45 PM
brown
Polarity:-
Location:BCM, 24 pin plug, pin B12
Posted By: sootah
Date Posted: March 04, 2013 at 11:41 AM
What does BCM stand for? I'd assume it's the same thing I found the door locks RED / black and ORANGE / black wires connected to?
Posted By: howie ll
Date Posted: March 04, 2013 at 3:00 PM
BCM = Body control module.
Locks, windows, lights, trunk release, wipers etc. etc.
-------------
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.
Posted By: sootah
Date Posted: March 08, 2013 at 5:29 PM
Got the trunk release working beautifully. The brown wire at the BCM did the trick quickly and easily without needing to use a relay. The only bit I wasn't able to figure out was, oddly enough, the horn - although I don't really care about that all that much.
I checked the black wire I found in the ignition harness [which was a much smaller diamater than the other wires in there] and measured it with my multi-meter while honking and didn't read anything. Just for kicks I tried hooking it up to the Viper anyway and nothing happened as I had expected. No matter, I finally have my dash back together!
Random question though - the small wiring cover that goes below my steering wheel is totally hosed, where can I get myself a replacement?
Posted By: howie ll
Date Posted: March 08, 2013 at 6:08 PM
Random answer but think about breakers yards.
-------------
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.
Posted By: howie ll
Date Posted: March 08, 2013 at 6:11 PM
Try grounding that black wire. If it sounds the horn that's the one.
With a DMM, set to 20VDC, red probe to a 12V+ constant, black probe to suspect wire, sound the horn, it should read 12.3V+
-------------
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.
Posted By: racerjames76
Date Posted: March 14, 2013 at 1:42 PM
I believe howie ll wrote:
breakers yards.
translates to junk yards in american english.  Sorry for chiming in! ------------- To master and control electricity is perfection. *evil laugh*
Posted By: howie ll
Date Posted: March 14, 2013 at 2:17 PM
Quite correct.  ------------- 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.
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