before i bought my maxima i test drove it and somehow i did not turn on the radio (probably because i was so overly excited :P ) anyways when i got home that day i notice my head unit did not work. i wanted to check my MPG and maintenance button but i couldn't. about 2 months later i took my whole entire head unit out and found out the wires were unplugged to my upper head unit! :P kinda of silly but i'm just happy that i can listen to music thought i share