The + /// Positive //// red must always be connected together. Never
connect positive to negative! On your positive ground car, the
positive goes to the engine block. Negative ground cars have the
negative of the battery going to ground on the block. You never charge
a battery backwards!
Jim
Tom Taylor wrote:
My car's battery was showing in need of a charge to I hooked up my 3
amp battery charger set at 6 V. It showed about a 1/2 to 3/4 amp
charge. Left it overnight and totally dead. So, I tried a new
Interstate that had been shelf sitting for 3 years or more and it was
dead.
Bought a new 6 V battery from Napa and installed it and cranked car
and drove it under carport. Noticed the amp meter going negative when
I juiced the motor and positive when I turned on the lights. Shut is
off and went to bed and i woke up in the middle of the night realizing
this car must have been like the old Fords of the era and had a
positive ground. Got my shop manual out and verified it is a positive
ground. So, I took the battery to my shop and connected the battery
charger and it only registered a 3/4 amp charge when I put the
positive battery charger on positive battery and neg on neg. I then
reversed the charger connections and it jumped to 3 plus amps which is
all this little W.T. Grant charger, that is 50 or more years old, can
handle.
Then I decided to just remove the battery charger and see if I should
be doing it reversed. On the surface it seems that that would be
correct but wanted to run it by folks who have more experienced with
the 6V pso ground stuff than me. Even my M/ASE mechanic said he did
not know as it was before his time.
TIA
Tom
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--
Jim Carpenter
Owner
Collectors Auto Supply Inc.
Peachland B.C. Canada
Oroville WA. U.S.A.
1000 On-line Catalog Listings <http://www.collectorsautosupply.com/>
Every/Model/Year!
Toll Free: 1-888-772-7848
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Fax: 1-250-767-3340
Website: CollectorsAutoSupply.Com <http://www.collectorsautosupply.com/>
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