how to connect a 1960 wonderbar radio C1

[Antonio Loi]

I have a 1960 Corvette and an original Wonderbar radio. How do i connect it?
It has only one cable (Green/GreenBlack) which i think is for the loudspeaker.

I cannot find a place to put the power on. There are no more cables on this radio!

I find only one place where it is possible to connect a cable but i cannot make out which site is the PLUS and which would be the MINUS. Using an Ohm meter, both places seem to be connected to the chassis of the radio.

Who will help me solving this puzzle?

Greetings from the Netherlands
Antonio Loi

[John H.]

Re: how to connect a 1960 wonderbar radio C1

The radio chassis is grounded with a separate ground wire from the right side of the chassis, through the firewall, to the inboard rear passenger side valve cover screw. There are two connector spades on the left side of the radio - one is radio power (yellow wire) and one is power for the dial light (gray wire).