Adding a Sub and Amp [Archive] - GrandAmGT.com Forum

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Chevylover54
09-29-2002, 02:35 PM
I'm adding a sub and an amp. Unfortuately my 96 Cavalier Z-24 blew the engine so now I'm taking my Fosgate amp and one of my 12" Fosgates and putting it in my 2001 GT. I have the Moonson system. I'm pretty experienced in installing stereo equipment so I know what I'm doing. I bought a high to low converter and getting ready to throw it all in. My question is, are the rear speaker outs from the factory amp clearly marked or can someone post a color code? Second is there a remote turn on running from the deck to the truck that I can use or do I have to run a wire with a switch? TIA.

2000blkgagt
09-29-2002, 10:10 PM
1......................Grey....................... .Front Left Speaker +
2......................Tan........................ ..Front Left Speaker -
3......................Dark Green.............Front Right Speaker -
4......................Light Green.............Front Right Speaker +
5......................Black .....................Ground
6......................Brown.....................I llumination
7......................Grey....................... .Dimmer
8......................Pink....................... ....Power Antenna
9......................Yellow..................... 12V Ignition
10....................Orange....................12 V Constant
11.....................NA......................... ..NA
12.....................NA......................... ..NA
13.....................NA......................... ..NA
14....................Dark Blue................Steering Wheel Controls
17....................Light Blue............... Right Rear Speaker -
18....................Dark Blue................Right Rear Speaker +
19....................Yellow.....................L eft Rear Speaker -
20....................Brown......................L eft Rear Speaker +

oldinstaller
09-29-2002, 10:11 PM
The basic wiring color code of any GM vehicle for rear speakers
are as follows:
LR+ BROWN
LR- YELLOW

RR+ DARK BLUE
RR- LIGHT BLUE

please note that the factory amp for the system should be
in the left rear quarter panel area in the trunk. there are wires
coming from the factory stereo going into the factory amp.
you should tap into the wires before the amp and not after
the amp. that way, youre not trying to step down an amplified
signal.

if you also look carefully on the same wiring harness, you will find
a factory turn on wire too. the usual factory color should be pink but best to test with a meter to make sure.

good luck.

oldinstaller
09-29-2002, 10:13 PM
if im not mistaken, left front + is tan, not grey.

papiogagt
11-19-2002, 12:01 PM
to bring up an old thread... so i can tap a remote wire right before the factory amplifier? that would save me running a whole new wire all the way back there. i ask because i just bought a new amp and sub that i will have in a couple weeks and have never installed car audio before, just other car electronics, so i'm not completely new to the ideas.. also, could someone please specify if we can run rca's from the stock mosoon headunit or if we have to tap into the speaker signal. tthanks alot anyone!

grass
11-19-2002, 02:50 PM
papio, there are no rca preouts on the stock headunit, so you 'll need 1) an amp with Hi-level inputs, 2)a line out converter

number 2 is the better option due to less interference.

you can tap into the remote turn on lead for the factory amp to save the hassle of running a new wire all the way back, i believe Oldinstaller said it was pink but i'm not 100% sure either