59 radio hookup

[SCHRUMGMC]

I am trying to figure out how this GMC radio is hooked up I found where the antenna goes but that antennas shot there's two wires leading him somewhere but I think one of them's been snapped in half or something but I'm trying to figure out where at all the wires go him one may go to the speaker and stuff but I'm not 100% sure so I am trying to figure out how this GMC radio is hooked up I found where the antenna goes but that antenna shot there's two wires leading him somewhere but I think one of them's been snapped in half or something but I'm trying to figure out where at all the wires go him one may go to the speaker and stuff but I'm not 100% sure so but I'm if someone could tell me where the two wires go and how could I get this radio out to test and see if it still usable thank you