there is a DANGER on all old mopar radios that i found out with a lot of research!!
you CANNOT connect a modern speaker to these old radios!! if you do, you will burn out the "transistors" in the radio. i found out that the old radios require 8 ohm speakers. all NEW speakers are only 4 ohm and they will burn out the transistors in an old radio! DO NOT try out an old radio hooked to any speaker. you will burn out the radio.
