Thanks Pizzaguy! Good to know that I have a pwr amp. Evidently the two skinny wires on the far right are what enables the pwr amp?!?! It looks as if they do not hook up to the aftermaket radio itself but need to be energized "somehow" to enable the radio's signal to pass thru amp which will feed the speakers. The radio feeds the signal to the amp and the speakers are connected to the amp rather than the radio. Anyone know how to do this? I've looked at schematics and don't see how to manage this! The colors of the two skinny wires "appear" to be Grn/Blu and Gray/Blu. Took a little better pic deeper in the mounting cavity. Looking at schematic I see a Gry/Blu coming from a "Splice Block 200" to the radio pin 6 or maybe an {8}.