I have Zenith 4B313 Farm radio. How do I find out the correct voltage? It has two wires out the back, one is black the other is yellowish tan with red stipe.
Many Thanks, Jim Moore

Hi,
This is actual a 6 volt radio. It uses a vibrator to develop an AC current out of the vibrator circuit.

http://www.NostalgiaAir.org/Riders/showinfo.asp?PATH=ZEN&IMG=_ZEN_9-1.gif&INF=4B313 This is the schematic here on Nostalgia Air.
There is another page too with the phono and circuit changes for the phono pickup: http://www.NostalgiaAir.org/Riders/showinfo.asp?PATH=ZEN&IMG=_ZEN_10-40.gif&INF=4B313

If you should need a 6 volt vibrator, let me know and I can check on the pricing from a source of mine who is not on the web.

: I have Zenith 4B313 Farm radio. How do I find out the correct voltage? It has two wires out the back, one is black the other is yellowish tan with red stipe.
: Many Thanks, Jim Moore