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Re: Super A 12 volt conversion - Could you check my schematic?

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John T

03-09-2013 05:54:22

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Its so close and I agree with the other gents great advice, but not to be too over picky lol Id prob use 14 or even 12 gauge stranded wire versus 16 (where you show 16) even if the difference is not hardly measureable and in millivolts, juts how Im wired, I a CONSERVATIVE remember who despises voltage drop even where negligible, especially in the ignition (4 amp) circuit.........

Your un ballasted coil may be labeled "12 volts" or "12 volts NOT for use with ballast" or "12 volts no ballast required" etc but NOT one labeled "12 volts for use with or requires ballast!!!!

As far as the overcurrent protection that Jim and others mentioned, Id probably use 15 to 20 amps (depends on wire size used actually) in the ignition/load circuit (placed at ammeter output) and 60 to 80 (depends on alternators output) in the alternators output circuit. I usually use 10 gauge where you show it in the charging circuit although the alternator (depending on its rating) puts out more then 30 amps. Of course, a wires ampacity is much higher in "free air" then when jacketed or enclosed in counduit......

Nuff said

John T

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03-09-2013 16:08:54

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 Re: Super A 12 volt conversion - Could you check my schemati in reply to John T, 03-09-2013 05:54:22  
Thank you everybody! Yes, it is a Petronix 12 volt. I also followed ya'll's advice and bought a 20 amp fuse and a 80 amp fuse. Will post an updated schematic tomorrow. After the better part of 2 years I'm almost ready to start the tractor.

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