I have a 2002 cadillac sts and I am trying to locate the remote wire on the factory amp to tap into with an aftermarket amp

Buy the factory service manuals from
Helm.Com & follow the trouble charts

Helm.Com for original factory manual that came with it
& any factory service manuals you want

I have bought from them for 49 years, but they
are expensive & necessary

Try unhooking your battery and leting set 10 min., sometimes at factory we had to do that to do like a reset on radio

Usually you have to lock and unlock the drivers door while pushing buttons on the remote - should be in your owners manual.

Your aftermarket radio should have color-coded wires which identifies power, ground, speakers, etc. most depaetment stores carry a radio harness adapter kit. This will connect to your radio's exact color coded wires, and will plug right in to your factory's wiring plug. And don't forget electrical tape.

Use a test light and tap into the acc power wire, this is the wire with power when the key is on , then when key is off the power is off this way the amp turns on and off with the key, and it wont kill your battery when ignition is off, just use test light to test wires. hope this helps, note the wire is black and pink just test to make sure.

1994 Cadillac Seville Car Audio Wiring Color Codes
Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: Yellow
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Gray
Car Stereo Dimmer Wire: Gray/Black
Car Stereo Antenna Trigger Wire: Pink
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: 5 1/4′
Car Audio Front Speakers Location: Doors
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Car Audio Rear Speakers Size: 6′ x 9′
Car Audio Rear Speakers Location: Rear Deck
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue

pls rate

I will take it that you have a remote car starter.
If its factory installed, it should be under warranty..take it to get it checked out.
If you have an aftermarket unit, then see the installing dealer.

There is a chance that someone close by has an identical unit on the same frequency, and its activating your system, tho this is a remote possibility.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/sean_54c3a3dc48a7773c

replace battery in your key holder

follow the spark plug cables.. one end is the coil pack... the other end is the spark plugs if you still can't find them... that's not a diesel by chance is it ?