Battery question
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Topic author - Posts: 302
- Joined: Sun Jan 06, 2019 2:24 pm
- First Name: Bill
- Last Name: Robinson
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Battery question
Asking for a friend- if a car is incorrectly connected positive ground- will the starter spin backwards?
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- First Name: Philip
- Last Name: Thompson
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Re: Battery question
the starter dont care but everything else does so dont do that. philip
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Re: Battery question
The only thing on a T that is polarity sensitive would be the generator (it can be flashed) and if it has a modern regulator or diode cutout on it. Mechanical cutouts do not care what ground is used.
I know the voices aren't real but damn they have some good ideas!
1925 Cut down pickup
1920 Dodge touring
1948 Ford F2 pickup
1925 Cut down pickup
1920 Dodge touring
1948 Ford F2 pickup
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Topic author - Posts: 302
- Joined: Sun Jan 06, 2019 2:24 pm
- First Name: Bill
- Last Name: Robinson
- * REQUIRED* Type and Year of Model Ts owned: '21 Depot Hack, '25 Touring Car, '26 Roadster Pickup, '27 Tudor, & another '27 Tudor
- Location: Salty Bottom, ALABAMA AL
- MTFCA Number: 22487
- MTFCI Number: 17887
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Re: Battery question
Thanks. I'll pass this info along to a friend who recently bought a car at auction that was incorrectly wired with a positive ground. I've never worked on a T wired Positive ground, so I couldn't give him a good answer.
If anyone has ever been through his situation it would help him if you could list a step-by-step on what to check to get things right.
Thanks.
If anyone has ever been through his situation it would help him if you could list a step-by-step on what to check to get things right.
Thanks.
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- Location: Portland Or
- MTFCA Number: 52564
- Board Member Since: 1999
Re: Battery question
"and the ammeter." ya true, but it will just read backwards if the wires are not swapped. If it still has a mechanical cutout all you have to do besides the ammeter, is flash the generator after changing the battery leads. Google it.
If it has modern regulator or diode type, it will need to be changed out for negative ground type anyway. No other wires need to be changed.
If it has modern regulator or diode type, it will need to be changed out for negative ground type anyway. No other wires need to be changed.
I know the voices aren't real but damn they have some good ideas!
1925 Cut down pickup
1920 Dodge touring
1948 Ford F2 pickup
1925 Cut down pickup
1920 Dodge touring
1948 Ford F2 pickup
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Re: Battery question
If it is Friday and the car starts and runs, and the ammeter shows a charge when it is charging, it is fine as-is. You can fart around and spend Saturday afternoon fixing everything to negative ground (and maybe have to spend some money doing it) and on Sunday, you will still have a car that will act exactly like it did on Friday. But it will be correct. If that has value to you, then it has value to you.
I would not be inclined to mess with it until some part of the electrical system needs repairing or replacing and then expend the effort, but I sure wouldn't be inclined to mess with it otherwise...too many other things on a new T that invariably need correcting right away, for safety's sake.
I would not be inclined to mess with it until some part of the electrical system needs repairing or replacing and then expend the effort, but I sure wouldn't be inclined to mess with it otherwise...too many other things on a new T that invariably need correcting right away, for safety's sake.
Scott Conger
Tyranny under the guise of law is still Tyranny
NH Full Flow Float Valves
Obsolete carburetor parts manufactured
Tyranny under the guise of law is still Tyranny
NH Full Flow Float Valves
Obsolete carburetor parts manufactured
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Re: Battery question
This is not quite related but I inadvertently charged a battery backwards, it was completely dead and the charger did not react and it charged up fully ok, I only got a reaction when I put it back into service. I had to completely discharge the battery using a small light (it took about 5 days) and recharge it the correct way, If you think it can't be done well it can. This did cause me a short period of grief.
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Re: Battery question
David, I did the same thing with an old Cub Cadet...thing actually started, but the amp meter showed a discharge.