i bought a sony cd changer (used), well it didnt have the instuction manual so i was wondering if anyone could help me here. most of it is obvious. what i need help with is the power wires. there are three yellow black and red. i know that yellow is memory black is ground and red is power. i know the black i just screw into the chasis but what about the red and yellow where do they connect to. thanks for any help.

 

yellow is probably constant 12v and red is switched 12v.. which could tap in to the cig lighter, radio switched power, fuse panel, etc...