I am trying to figure out what wire goes to my remote amp. It is a Sony head unit and their site says white/blue wire but I don't have that. This is what the interwebz pulls up on my jeep as far as wiring...
 
1992 Jeep Cherokee Car Radio Stereo Audio Wiring Diagram
Car Radio Battery Constant 12v+ Wire: Red/White
Car Radio Accessory Switched 12v+ Wire: Violet/White
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Blue/Red
Car Stereo Dimmer Wire: Red/Black
Car Stereo Antenna Trigger: Violet/Orange
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Gray
Left Front Speaker Negative Wire (-): Yellow
Right Front Speaker Positive Wire (+): White/Red
Right Front Speaker Negative Wire (-): Brown/Red
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Gray/White
Left Rear Speaker Negative Wire (-): Brown/White
Right Rear Speaker Positive Wire (+): White/Black
Right Rear Speaker Negative Wire (-): Brown
 
So would I use the Car Radio Accessory Switched 12v+ Wire: Violet/White?
 
I heard people running a wire directly to the battery and then having the remote amp wire with a switch... I really don't want to flip a switch every time I am done. Everything else is hooked up and works. For now I am running the battery wire and speaker wire outside of the jeep to make sure it works before I tackle the routing mess. Any help would be appreciated, I haven't done this stuff in years.

the blue/white wire would be ONLY on the radio not part of your car's wiring

THANK YOU!!! Can I unplug the harness from the back of the radio and jam the multi meter lead into the pin or does the radio need to be hooked up and strip the wire for my testing? I have an awesome multimeter and I barley know how to use it...

don't hook up your amp to the car Car Radio Accessory Switched 12v+ Wire: Violet/White wire
hook up the deck as it states in the manual...
on the wiring harness on the back of the radio the will be a blue or a blue/white wire... run that wire directly into the remote terminal on the amp
remember to disconnect your Battery under the hood while you are making all your power connections...

djcake123

don't hook up your amp to the car Car Radio Accessory Switched 12v+ Wire: Violet/White wire
hook up the deck as it states in the manual...
on the wiring harness on the back of the radio the will be a blue or a blue/white wire... run that wire directly into the remote terminal on the amp
remember to disconnect your Battery under the hood while you are making all your power connections...

 
http://www.caraudiohelp.c...nit_no_remote_wire.htm
 
You can use the accessory wire if your amp does not have a remote wire.
 
The main difference from doing it the right way and this way is that if you turn the car deck off with the car still on the amp will stay on.
 
EDIT.
 
Here is the wiring diagram for that deck.
 
http://www.docs.sony.com/...e/CDXGT120_install.pdf
 
Your going to want to use the Ant/rem, The blue and white striped wire.

Sonys support site says a white and blue wire according to this...
http://www.docs.sony.com/...e/CDXGT120_install.pdf
Sooooooo, I am going to plug my multi into the Violet/White pin when I get home and see what it reads. If I die, it was nice knowing you all...
 
EDIT DJCAKE123 beat me to it. I will look at this again and study it. I am a little lost 

 
Use the "remote" wire that comes off the back of the deck harness.  And run it back to the remote terminal on the amp.  End of story.
 
Make it easy on yourself too, and pick a $10 installation harness for your vehicle.
 

I will have to look again when I get home. I did remember seeing some electric taped stuff tucked away in the back so I hope it is not all mickey moused. The pins that connect right into the stereo did not have a blue and white though. Maybe there is another set buried back there or something. If not, maybe I will post a picture of what I have when I get home.

Hey, for me, when I wired up my amp in the back of my pickup (crew cab), I tapped into the window lock.  This was nice so that I could kill my amp when people were sitting in the back seat where my sub was located.  Do you have a window lock button by your driver controls (where the power window switch is located)?  If so, it's a nice way to add a remote off and on to the amp.  Otherwise, you can tap into any power wire that comes on with the key as stated before.

+1 on the factory install harness, they are plug and play, you can pick up rca cables that have a remote wire as part of the cable, makes it easier to run all in one loom. the wire your looking for is on the left side of the sony harness, dont hook up 12v direct. The remote wire is low current .3A and is more of a signal than a supply.

Yeah, the subs will be in the rear. ( two 12" polks in a bandpass box I believe) The wiring nightmare will be the main power wire with the fuse on it as well as the rca from the stereo to the amp in the rear.
I swear, this thing is such a money pit but it's been fun so far. I have a 5.5 inch lift on it and I just dropped a bunch on some rancho 9000 adjustable shocks for the rear. With the turn of 2 knobs, it rides like a Cadillac, at least in the back...
Next thing is a hack and tap for the driveshaft. That's gonna be fun.

sounds like my old sunfire... but I only had 1 12" and 2 visonik 900xd's

here is a quick vid. from my 85 jetta from back in 2005
 
http://forum.realmofexcur...daudioinhuman12-1.html

haha dnyamatt is your friend. it would of made your car sound so much better

 
 
If your running 2-12's and say a 1200w amp (I don't recall you saying amp size).  Your probably going to want at least one capacitor, to keep the voltage drop (headlights dimming) and stress on your electrical system (alternator and battery) to a minimum.
 
I have installed a capacitor in every system, over the last 10 years, sometimes just as a precautionary step.  Even if you say your not going to bump, you know your gonna. 
Thats when a cap is going to help alot, under high draw times.