I bought a Pioneer 860MP Headunit and have a couple of questions about a few of the wires in the unit's wiring harness. In the instructions, a Yellow wire is shown that goes to "terminal always supplied with power regardless of ignition switch position." What terminal is being referenced here, and where is it located?? Do I need to install this line, and what effect will it have if I do or don't connect this wire? Same questions for the Red wire that goes to "electric terminal controlled by ignition source (12 V DC) ON/OFF." Ans Same questions for the Orange/White wire that goes "to lighting switch terminal." Thanks a lot guys for your time. I'm a complete newbie to this.