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Most wiring now is standard colors....red=ignition(goes to a switched power source...Yellow=battery...goes to a hot all the time(even with key off)...black=ground...white=left front speaker positive...white w/blk stripe=left front speaker negative...gray=right front spkr +...gray/ blk=right front spkr - ...green=rear left +....green/blk rear left - ...violet=right rear +...violet/blk= right rear - ...light blue or blue with a stripe is the remote turn on lead either for an amplifier or power antenna...some radios have an orange/ with white stripe that connects to your parking light dimmer circuit to dim the radio light with the dash lights....and then you should have the antenna plug and possibly rca outputs that go to an external amp
Check your wires they might be touching steel around your car mostly look at your yellow and red wires those are the 1' that give it power and light to your radio also check your radio fuse in the back.
What I did to manualy turn on and off my amp is I put a wire hooked to the fuse followed by a switch and then from the switch ran it straight to the amp. Make sure that the wire plugged into the fuse is the on the fuse for the radio and that it is live only while key is turned on. I have this set up for police reason. They do not like loud music where I live. I have never had a problem with this set up. RADIO FUSE-------SWITCH----------------AMP
Sounds like you're not getting voltage on the accessory power lead. This is the red wire at the back of the deck, and it supplies power whenever the key is switched on. It's possible that your vehicle's radio fuse is blown.