I am connecting a ipod interface to my aux, it is asking me to connect red wire to switched 12vlt like ignition or accessory, and yellow wire to 12vlt constant power. I have no idea where to go with these. Can I tap into wires on wireharness to factory radio?

 

Yes you can hook into the wireing harness. Are you installing an iCruse? On the flat L shaped plug the first green wire is constant and the purple or other green is switched.

chuck