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gearhead1952 · 03-12-2013, 04:13 PM

I don't think I would use a battery charger as some don't really have a set output voltage. I use a 6v battery when I test them. The old cars with these radios have a positive ground not negative ground so you want positive to go to the case of the radio. Also the radio is going to pull a good 5-10 amps. fyi

03-12-2013, 04:13 PM	#2
gearhead1952 Senior Member Join Date: May 2010 Location: Julesburg, Colorado Posts: 714	Re: Advice on bench testing 34 ford radios I don't think I would use a battery charger as some don't really have a set output voltage. I use a 6v battery when I test them. The old cars with these radios have a positive ground not negative ground so you want positive to go to the case of the radio. Also the radio is going to pull a good 5-10 amps. fyi Last edited by gearhead1952; 03-12-2013 at 04:14 PM. Reason: add info