ok so i finally started putting in my system and i have the wiring diagram from a jag member but i cant read these crazy things i can understand the color of speaker wires but im un able to find the B+ the negative and the constant B+ for the radio seeing that those are the only wires i will need for radio. all i really need is the color of the wires that are in the yellow or white plug on the back of radio, i have a 02 xkr and i removed all of the factory speakers and replaced with all new speakers amps and crossovers now im stuck at the radio so if somebody here can help me i would greatly appreciate it

 

Why don't you just measure it with a multimeter to be sure?