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GS - 1st Gen (1993-1997) Discussion about the first generation GS300

here is the stereo wiring diagram for our cars

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Old 04-01-04, 08:12 AM
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Pianoman72
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Arrow here is the stereo wiring diagram for our cars

1st gen GS300 stereo wiring diagram







YOU'RE WELCOME
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Old 04-01-04, 09:00 AM
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Ken'sGS300
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Awesome info !!! Now all I need is to find some changer plugs to convert my GS from Non-CD to CD changer.

Ken

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Old 04-01-04, 10:11 AM
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Cool, this is going to be really helpful Maybe this should be a sticky or it should be posted under the "Specifications" section for the 1st gen.
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Old 04-01-04, 11:25 AM
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Originally posted by Karin'sGS3
Awesome info !!! Now all I need is to find some changer plugs to convert my GS from Non-CD to CD changer.

Ken
i don't think thats possible unless you wanna rip up all your carpet and run some serious cables. there are probly nearly 50 tiny little wires that must be run from the front of the car to the rear of the car. you must also change the headunit.
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Old 04-01-04, 11:26 AM
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btw PIANOMAn you ROCK!!!!. i've been too lazy to go to the dealer to pick up the wire diagram to fix my antenna. after 2 years of aftermarket sound system my antenna has not gone up yet. but today will be the day. lol.
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Old 04-01-04, 12:30 PM
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i tried connecting all 3 wires on the blue plug 4, 9, 10 all to the antenna wire on my aftermarket headunit. but the anteanna is not coming up. the headunit is in radio mode so it should go up, but no go. i also tried different combo of the 3 ant wire but still no go.
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Old 04-01-04, 12:47 PM
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Jmai, try this:

In the trunk at the antenna, splice together the Red-Green and the Black-white wire.

Now at the headunit try hooking into the three ANT wires, one by one. I think one of those combos will work.

BTW Ken if you don't have the "CD" button on your HU you have no interface (plug) for the changer on the back of the HU. Sad, but true.

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Old 04-01-04, 12:51 PM
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walking out to the car now.
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Old 04-01-04, 01:02 PM
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Originally posted by Pianoman72
Jmai, try this:

In the trunk at the antenna, splice together the Red-Green and the Black-white wire.

Now at the headunit try hooking into the three ANT wires, one by one. I think one of those combos will work.

BTW Ken if you don't have the "CD" button on your HU you have no interface (plug) for the changer on the back of the HU. Sad, but true.
here's a few pic. first thing i notice is there is no plug here. can someone verify this. i checked for extra plugs but there is not one.
Attached Thumbnails here is the stereo wiring diagram for our cars-a1.jpg  
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Old 04-01-04, 01:04 PM
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this one? and where's the other on that same harness?
Attached Thumbnails here is the stereo wiring diagram for our cars-a2.jpg  
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Old 04-01-04, 01:05 PM
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or did you mean to splice these 3 together?
Attached Thumbnails here is the stereo wiring diagram for our cars-a3.jpg  
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Old 04-01-04, 02:43 PM
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Don't make me bust out the digicam, too, jmai. lol

Here's a pic of mineS to look at. Give me a sec to figure this freaking deal out. Yes that wire is the AMP wire you circled and the SC guys used it somehow to get their antennas working. i don't see the black-white wire which troubles me. hmmmm.....
Attached Thumbnails here is the stereo wiring diagram for our cars-antenna.jpg  

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Old 04-01-04, 02:47 PM
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oh man, you busted out the digi. i appreciate it man. this thread will go down in history. this is a perfect DIY aftermarket headunit instruction. we are slowly tearing the first gen gs apart. lol. this forum could be the First gen gs complete DIY booklet.
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Old 04-01-04, 02:48 PM
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Jmai I think you want to cross the RED-GREEN that you circled with the BLACK-YELLOW wire. That should give the antenna power and then you can use the ANT output from your aftermarket headunit and connect it to the BLACK-WHITE wire (pin 9) up behind the headunit. Total longshot.
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Old 04-01-04, 02:48 PM
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oh yeah, ABOUT freakin time you checked the forum. lol. i been waiting for you to reply. thanks lol. like all my sound deadening materiel? my trunk lid weights a ton due to the same stuff all over my trunk plus foam
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