Aaron, your wrong, dead wrong. Especially since the 12v constant is the yellow wire, you do not know what your talking about.
Take some extra 12 gauge speaker wire (it will work, done this before), and connect it to the red wire on the stereo harness. Make sure it is long enough to reach the fuse box. Get a fuse tap (safest way to do this), pull your windshield wiper fuse (it has power when your ignition is in the acc and run position). Put the wire into the tap, place the fuse into the tap, and place into the receptacle for the fuse. Now your stereo will have power.