a freind installed a new radio in his 2001 nissan xterra and give me the factory radio for my chevy pickup.we can't figure out where the hot wire hooks up and the ground and memory on the back of the radio.when we get that hooked up i think we can figure out the speakers. can you help us.

The factory radios in Xterra's use the mounting bracket as a negative ground. They also match up to the Nissan 95 & up wiring harness.