pretty much any speaker will work. you don't need the original size at all! and speakers work no matter which way you have the wires. though you really should put the wire with the line on the negative, and the solid color wire on the positive to ensure the life of the speaker.
if no sound comes out from 2 different speakers, the problem will most likely be the radio.
I have no clue if 66 had vaccum tube radios or not.
I hope someone here can fill that in for you!
if no sound comes out from 2 different speakers, the problem will most likely be the radio.
I have no clue if 66 had vaccum tube radios or not.
I hope someone here can fill that in for you!