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Bob C · 12-15-2018, 11:25 AM

I think they also had a AA battery, this is from the Paramount web site.

Battery Replacement Circuit Board - $150.00

This circuit board is designed to eliminate the AA and D cell batteries that run your rpm and dwell meters in models 400, 500, and 600.

12-15-2018, 11:25 AM	#7
Bob C Senior Member Join Date: May 2010 Location: So Cal Posts: 8,750	Re: Sun Distributor Machine I think they also had a AA battery, this is from the Paramount web site. Battery Replacement Circuit Board - $150.00 This circuit board is designed to eliminate the AA and D cell batteries that run your rpm and dwell meters in models 400, 500, and 600.