LMC5--Brown wire mod?
Thread Starter
Racer
Joined: Mar 2016
Posts: 399
Likes: 31
LMC5--Brown wire mod?
After doing the mod--has anyone still had problems with -pull key-message? Im not having any message after Brown wire install-Also anyone know what this brown wire does to the BCM? 
Pro
Joined: Jan 2016
Posts: 519
Likes: 65
From: South Salem NY
I just did the install myself. the instructions said
"do not insert the capped brown LMC5 brown wire, as it will not be needed in the vast majority of LMC5 installation. The box on page 2 describes an optional feature procedure with this brown wire which can correct some additional BCM irregularities"
This info is in the instructions as a note just below #13 in step #3
"do not insert the capped brown LMC5 brown wire, as it will not be needed in the vast majority of LMC5 installation. The box on page 2 describes an optional feature procedure with this brown wire which can correct some additional BCM irregularities"
This info is in the instructions as a note just below #13 in step #3
Burning Brakes
Joined: Jul 2007
Posts: 898
Likes: 48
From: Olympia WA
Did the lmc5 a few weeks back without the brown wire. The pull key message creeped back and then did it every time I went to start. Luckily I had kept original packaging/instructions and swapped out brown wires then snipped the lmc5 brown wire loop. Everything is perfect.
Last edited by CJ1957; Jul 24, 2016 at 11:44 AM. Reason: Grammar
Race Director
Joined: Aug 2015
Posts: 12,212
Likes: 4,697
From: SE WI
I had to do the brown wire mod. No problems at all since. Lots of starts. These instructions need to be followed to a "T". Call the guy that sells them to know specifics of why it's needed. In general there are variations of electronics and software on the different model and year cars. The kit was designed to address them all. I never had issues and just installed the kit based on strong advice from people here.
Last edited by Zjoe6; Jul 24, 2016 at 12:21 PM.
Thread Starter
Racer
Joined: Mar 2016
Posts: 399
Likes: 31
I just did the install myself. the instructions said
"do not insert the capped brown LMC5 brown wire, as it will not be needed in the vast majority of LMC5 installation. The box on page 2 describes an optional feature procedure with this brown wire which can correct some additional BCM irregularities"
This info is in the instructions as a note just below #13 in step #3
"do not insert the capped brown LMC5 brown wire, as it will not be needed in the vast majority of LMC5 installation. The box on page 2 describes an optional feature procedure with this brown wire which can correct some additional BCM irregularities"
This info is in the instructions as a note just below #13 in step #3
Le Mans Master
Joined: Jul 2011
Posts: 7,420
Likes: 969
From: Morristown New Jersey
Oldtimer
If I remember right, they added the brown wire to cure certain problems that occurred with the old unit. (I've had both)
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Racer
Joined: Oct 2006
Posts: 399
Likes: 78
From: Sidney Ohio
Just what is the "Brown Wire Mod?" I did the LMC5 install years ago and have just recently started getting the "pull key and wait 10 seconds" message. I got out my original installation instruction sheet and can't find anything about a brown wire.
Pro
Joined: Jan 2016
Posts: 519
Likes: 65
From: South Salem NY
The instructions should be on page 2....that back side of the very first page. At the bottom. Before Step One which is on page 3. That is where it is on my instructions. but mine are brand new.
Racer
Joined: Jan 2016
Posts: 479
Likes: 44
From: Northern Colorado
Some do the Brn wire mod right away anyway I guess as a preventative measure. I did not and advice from Richard (for me anyway) is don't as it can add other variables to the mix. I have gotten a couple Pull Key messages since install but I just wait ten seconds, start again and that's that. For me, not worth cutting/adding more wires and then waiting to see what may happen. I think I have had two in 4 months. Richard seems to always answer if you have questions.....
Thread Starter
Racer
Joined: Mar 2016
Posts: 399
Likes: 31
Thread Starter
Racer
Joined: Mar 2016
Posts: 399
Likes: 31
There have been several different variations of the LMC5 over the years as the developer tried to deal with the often unpredictable nature of the BCM which controls the Column Lock system.
Your variation may well have not had the Brown Wire Option.........
You might want to call Compliance parts and discuss your situation.
http://complianceparts.com/contactus.html
Racer
Joined: Oct 2006
Posts: 399
Likes: 78
From: Sidney Ohio
Thread Starter
Racer
Joined: Mar 2016
Posts: 399
Likes: 31
Completely agree with your observations that many seem to have the problem after LMC5 install.
I have been recommending that people that people do the Brown wire mod when you install the LMC5 so you deal with the Column Lock issue once and are done with it rather than having new or continuing symptoms after you install what is supposed to be the "ultimate" fix.....
Seems like "ultimate" if it works for you first time but try again if not...
Le Mans Master
Joined: Feb 2012
Posts: 6,644
Likes: 479
From: OK
Thx for the reply--what i dont understand--one forum member on this thread said that Richard said dont do the brown wire because it can cause other problems--ive never heard that before?? Have you or anyone heard any problems after brown wire mod? BTW i insert my key and i turn right away to start--i see no sense in turniong key first to on waiting a few seconds than start car--especially with the brown wire mod done--any ideas on that?
I believe with all the Modules and sensors, that giving the Controllers a few seconds to "wake up" and do it's thing is just a smart thing to do... some do... some don't... I can't say emphatically if it makes a difference one way or another ... not much empirical evidence to support my theory so it's just a theory... that's my story and I'm sticking to it
Last edited by 73Corvette; Jul 25, 2016 at 11:20 AM.
Thread Starter
Racer
Joined: Mar 2016
Posts: 399
Likes: 31
Do you HIT the ground running in the morning or do you like to "wake up"
I believe with all the Modules and sensors, that giving the Controllers a few seconds to "wake up" and do it's thing is just a smart thing to do... some do... some don't... I can't say emphatically if it makes a difference one way or another ... not much empirical evidence to support my theory so it's just a theory... that's my story and I'm sticking to it
I believe with all the Modules and sensors, that giving the Controllers a few seconds to "wake up" and do it's thing is just a smart thing to do... some do... some don't... I can't say emphatically if it makes a difference one way or another ... not much empirical evidence to support my theory so it's just a theory... that's my story and I'm sticking to it
Racer
Joined: Jan 2016
Posts: 479
Likes: 44
From: Northern Colorado
1. What does the brn mod do exactly? (I believe Richard said it bypasses the relay, for those that have one but there may be other changes).
2. For guys like 8Vette etc have they ever had a Pull Key after the brn mod? Or has anyone as you questioned...
#2 would be good to know...
Thread Starter
Racer
Joined: Mar 2016
Posts: 399
Likes: 31
Another question or concern i have is this_ You replace the dark green wire with lmc5 brown wire--than you cut the brown wire loop in half--which disconnects the loop from anything--Why have the loop to begin with?