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By wjhpc - 13 Years Ago
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I just noticed that on my 6v '55, the negative battery pole is connected to the ground wire to the block. All accessories etc. work correctly. I am not gutsy enough to just switch the battery connections to "see what happens." Any thoughts on how this can be and what i should do now? Jim H
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By pintoplumber - 13 Years Ago
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Jim, my '55 was negative ground when I bought it. Just reverse the battery cables and repolarize the generator like when you replace a regulator. That's it. You would think the starter and fan motors would spin a different direction, but they don't.
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By rick55 - 13 Years Ago
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Don't worry about the polarity. You will find if you want to use any modern accessories they are all negative earth.
If everything works fine, just enjoy it.
Regards
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By Hoosier Hurricane - 13 Years Ago
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Ray: You took in a little too much territory when you said "all" 6v Fords were positive ground. Model Ts were negative ground, I'm not sure about Model As. Seems like positive ground came in with the '32s and the V-8s.
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By ray - 13 Years Ago
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If it is six volts it should be positive ground. It will run either way. Amp meter will read backwards if switched. Ignition will not be as efficient as coil polarity is will be wrong.
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By ray - 13 Years Ago
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Hoosier Hurricane (1/6/2012)
Ray:
You took in a little too much territory when you said "all" 6v Fords were positive ground. Model Ts were negative ground, I'm not sure about Model As. Seems like positive ground came in with the '32s and the V-8s.
My extreme apologies, Sir. I stand corrected. My experience has been with Ford cars, trucks, tractors, of the mid 1930s vintage up.
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By wjhpc - 13 Years Ago
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Wrap up on the positive ground story: I switched the battery leads back to positive ground, and repolarized the generator. Everything ran fine and i picked up a BUNCH of performance as the coil had been wired for pos ground and never switched to neg ground when he reversed battery leads. what a difference getting full spark going the right direction! thanks to all. Jim
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By Gary - 13 Years Ago
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OK, you just sent shivers down my spine. I converted my 55 to 12 volts but the negative battery post is still ground. On my 12 volt coil, one wire goes to the resistor and on to the ignition switch wire and the other coil wire goes to the distributor terminal. Should the negative wire of the coil go to the resister and on to the ignition lead (battery)? I have newly rebuilt engine and new carburetor and have had stall/hesitation issues.
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By rick55 - 13 Years Ago
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OK, you just sent shivers down my spine. I converted my 55 to 12 volts but the negative battery post is still ground. On my 12 volt coil, one wire goes to the resistor and on to the ignition switch wire and the other coil wire goes to the distributor terminal. Should the negative wire of the coil go to the resister and on to the ignition lead (battery)? I have newly rebuilt engine and new carburetor and have had stall/hesitation issues.
In your situation you are definitely better off with the negative battery terminal to earth. Your coil needs to have the negative terminal connecting to the distributor. This will probably cure your hesitation issues.
Regards
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By Gary - 13 Years Ago
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OK, thanks!!!
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By Gary - 13 Years Ago
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Rick, Ray, & John, Thanks for the info. I left out some vital info in the description of my situation(see above). I converted my 55 to 12V and have negaitve battery post to ground. I have changed the distributor and intake to 57. Right now the negative coil wire is connected to the distributor. Car runs good except have some hiesitation that could be carburetor. How should the negative coil wire be cionnected? Thanks,
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By aussiebill - 13 Years Ago
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Gary (1/13/2012)
Rick, Ray, & John, Thanks for the info. I left out some vital info in the description of my situation(see above). I converted my 55 to 12V and have negaitve battery post to ground. I have changed the distributor and intake to 57. Right now the negative coil wire is connected to the distributor. Car runs good except have some hiesitation that could be carburetor. How should the negative coil wire be cionnected? Thanks, That is correct!
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By rick55 - 13 Years Ago
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Gary, the negative of the coil should be connected to the distributor. There are lots of things which could cause hesitation, depending on what carburetor you are using.
Search through some of the past posts and i am sure you will find an answer.
Regards
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