CD Changer wiring MOD - NEEDED!
Thread Starter
Racer
Joined: Oct 2003
Posts: 429
Likes: 0
From: Chandler AZ
CD Changer wiring MOD - NEEDED!
Will anyone have the tech tip on the cd changer wiring mod install for a 98??? Stored in their PC? With this second server down, I am stucked 
If someone does, please email to havabier@***.net
Great day I picked to install the changer and no instructions on the plug mod!
Thanks a MILLION!
If someone does, please email to havabier@***.net
Great day I picked to install the changer and no instructions on the plug mod!
Thanks a MILLION!
Tech Contributor
Joined: May 2003
Posts: 7,035
Likes: 134
From: North Augusta, SC
Re: CD Changer wiring MOD - NEEDED! (StoutMan)
How to install factory CD Changer if 3 wire plug is missing. -- 1 of 1
Date Published: 2001-12-01
Submitter's Name: Tom Branella
Email Address: Tbranella@home.com
Corvetteforum.com Member Alias: RPOZ4Z
T his information came from Alan Barbic (California Quicksilver) I also went through the same frustration in the "great search" for the elusive three wired connector. You are not delusional.. It was not in my 98 vert either. I went over the wiring diagrams in the factory service manuals and was able to establish the role our elusive three wires play in the equation. I resolved the problem by thinking a bit out of the box (see how below) and now have a flawless trouble free install. To start clip the three wire plug off the new CD wire harness (you will play hell trying to find its mate anywhere so you might as well get rid of them) and install male bullet type connectors on each of the three wires. Now prepare three sections of wire (14-16 guage) at about 8 inches each and crimp and/or solder the appropriate female connectors needed to go with the newly attached males on the CD harness. Now we go looking for the connection points for the three newly made sections of 8 inch wire. All of these will be found in or close to the big "wad" of wires in the R/H upper portion of your second photo seen at; http://temp.corvetteforum.net/c5/rpoz4z//mvc-011s.jpg You will need a meter preferably one that has a squawk feature when doing continuity checks and sharp probes that allow penetration through wire insulation. Three wire Signal CD/Radio connection 1)SW +12 out C1(8) DK GRN, Radio "ON" signal 2)Power C1(10) ORG (always hot ??) 3)ground C1(5) BLK/WHT Starting with the easiest 3)ground = BLK/WHT You will find this one every where and any one will work just test continuity from wire to chasis ground and solder one of the 8 inchers to it. Next is 2) ORG = hot (I am fairly sure it is always hot) This one is in that "wad" of wires above the fuse panel in the photo. Current test by putting one lead to chasis ground and probing the other lead to the same color orange as the CD harness orange untill you get 12+/- volts (note:the radio fuse is also part of this wire so you can test from there however the test then turns into a continuity test first and then a 12 volt circuit test after you have identified you orange in the "wad" ) then solder up that one. The last one is a lot more of a challenge 1) Radio signal = DRK/GRN There are several shades of green so again use the CD wire harness as a color guide in the search. This color seems to be used as a communication link for several componants in the system so you will see this color wire used a lot in that "wad" of wires but only one or two of them are the ones you need. The way to find the wires in question is to pull the fuse panel and remove the box from the firewall (don't disconnect any wires). In the back of the box about midway are two of the dark green wires that are together put a probe on one of them and do a continuity search at the "wad" for it. When you find it strip a bit if the insulation away and connect the last 8 incher to it (DON'T SOLDER YET) now actually connect up all three wires and fire everything up with CD's in the 12 disk cartridge. If it is not working (the unit will take and shuffle the CD's but no music) then you tapped into the wrong Dark Green wire so keep tapping untill you found the one that enables the system and then solder it up. All should now work as intended so go ahead and finish up the install. Now all there is to do is enjoy.
Date Published: 2001-12-01
Submitter's Name: Tom Branella
Email Address: Tbranella@home.com
Corvetteforum.com Member Alias: RPOZ4Z
T his information came from Alan Barbic (California Quicksilver) I also went through the same frustration in the "great search" for the elusive three wired connector. You are not delusional.. It was not in my 98 vert either. I went over the wiring diagrams in the factory service manuals and was able to establish the role our elusive three wires play in the equation. I resolved the problem by thinking a bit out of the box (see how below) and now have a flawless trouble free install. To start clip the three wire plug off the new CD wire harness (you will play hell trying to find its mate anywhere so you might as well get rid of them) and install male bullet type connectors on each of the three wires. Now prepare three sections of wire (14-16 guage) at about 8 inches each and crimp and/or solder the appropriate female connectors needed to go with the newly attached males on the CD harness. Now we go looking for the connection points for the three newly made sections of 8 inch wire. All of these will be found in or close to the big "wad" of wires in the R/H upper portion of your second photo seen at; http://temp.corvetteforum.net/c5/rpoz4z//mvc-011s.jpg You will need a meter preferably one that has a squawk feature when doing continuity checks and sharp probes that allow penetration through wire insulation. Three wire Signal CD/Radio connection 1)SW +12 out C1(8) DK GRN, Radio "ON" signal 2)Power C1(10) ORG (always hot ??) 3)ground C1(5) BLK/WHT Starting with the easiest 3)ground = BLK/WHT You will find this one every where and any one will work just test continuity from wire to chasis ground and solder one of the 8 inchers to it. Next is 2) ORG = hot (I am fairly sure it is always hot) This one is in that "wad" of wires above the fuse panel in the photo. Current test by putting one lead to chasis ground and probing the other lead to the same color orange as the CD harness orange untill you get 12+/- volts (note:the radio fuse is also part of this wire so you can test from there however the test then turns into a continuity test first and then a 12 volt circuit test after you have identified you orange in the "wad" ) then solder up that one. The last one is a lot more of a challenge 1) Radio signal = DRK/GRN There are several shades of green so again use the CD wire harness as a color guide in the search. This color seems to be used as a communication link for several componants in the system so you will see this color wire used a lot in that "wad" of wires but only one or two of them are the ones you need. The way to find the wires in question is to pull the fuse panel and remove the box from the firewall (don't disconnect any wires). In the back of the box about midway are two of the dark green wires that are together put a probe on one of them and do a continuity search at the "wad" for it. When you find it strip a bit if the insulation away and connect the last 8 incher to it (DON'T SOLDER YET) now actually connect up all three wires and fire everything up with CD's in the 12 disk cartridge. If it is not working (the unit will take and shuffle the CD's but no music) then you tapped into the wrong Dark Green wire so keep tapping untill you found the one that enables the system and then solder it up. All should now work as intended so go ahead and finish up the install. Now all there is to do is enjoy.
Thread Starter
Racer
Joined: Oct 2003
Posts: 429
Likes: 0
From: Chandler AZ
Re: CD Changer wiring MOD - NEEDED! (markcz)
Tks Mark.... Now where's the GREEN wire???
Been taping around all grean wires and nada... there's pwr to the changer so the only thing is the head does not see the changer...
Any ideas???
Been taping around all grean wires and nada... there's pwr to the changer so the only thing is the head does not see the changer...
Any ideas???
Thread Starter
Racer
Joined: Oct 2003
Posts: 429
Likes: 0
From: Chandler AZ
Re: CD Changer wiring MOD - NEEDED! (StoutMan)
This solved my green wire mistery 
https://www.corvetteforum.com/techti...=256&TopicID=1
Also do NOT forget that the CD's go "upside down" Daaaaaah!!! Kept on getting an error anfter seing the CD's.
Sounds great now!!!
https://www.corvetteforum.com/techti...=256&TopicID=1
Also do NOT forget that the CD's go "upside down" Daaaaaah!!! Kept on getting an error anfter seing the CD's.
Sounds great now!!!
Thread Starter
Racer
Joined: Oct 2003
Posts: 429
Likes: 0
From: Chandler AZ
Re: CD Changer wiring MOD - NEEDED! (StoutMan)
And just sent the green to the radio and the orange and black to the "wad"... So just one wire needs to be run to the stereo.
But also found several of the wires that run to the plug on the head had been cut and patched (like I used to patch when I was 10 years old). And not soldered or nothing... So fixed that too.
Guess the old owner had an MP3 or other AUX going in there.
All done
But also found several of the wires that run to the plug on the head had been cut and patched (like I used to patch when I was 10 years old). And not soldered or nothing... So fixed that too.
Guess the old owner had an MP3 or other AUX going in there.
All done
