Truck AM/FM power connector

[BurnoutNova]

heres the story, i bought a AM/FM radio from a boardmember, and it was damaged in shipping. not his fault at all, so this isnt a complaint thread or anything. anyway, i need to test it to see if it still works. my truck isnt at my house, and cant really get to it easily anyway, so i need to know which terminals on the back do what. i can see the ground, but just want to make sure so i dont fry it.


thanks
zach