quick stereo question?

ok i put a new deck and speakers and subs in my 2000 GT i bypassed all mach 460 and ran new wires, everything is good except im not sure why my deck has no memory, for power i just used a wire out of the stock harness that is hot with key in the acc, on and engine running position. i thought that would be fine but i guess i need to find a new power wire. which wire are you guys getting power from?
 
Yeah, the ACC wire is only hot when the car is on or in accessory. Typically, there is a yellow wire to the aftermarket deck that needs to go to an always on hot wire. There should be one in the factory harness to connect it up to... you can find it with a multimeter while the car is in the off position.
 
Yeah, the ACC wire is only hot when the car is on or in accessory. Typically, there is a yellow wire to the aftermarket deck that needs to go to an always on hot wire. There should be one in the factory harness to connect it up to... you can find it with a multimeter while the car is in the off position.

oh gotcha i should have known that, i guess its been a while haha. yellow from deck to constant hot, and red power wire to acc/on wire