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Old 09-28-2019, 09:28 AM   #1
thrifty
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Default 27 polarity

I have tried searching and read a lot of info on polarity on a 27. From what I have read It can go both ways. Just not good on the electrical for long periods. Which is it positive or negative ground? When I bought the truck the battery was not hooked up, so I have no clue. I would like to get this fired up and running. Also another thing I have wondered about is the head lights ect. no switches. Do these come on when it is switched to battery?
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Old 09-28-2019, 09:59 AM   #2
redmodelt
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Default Re: 27 polarity

No, lights do not come one when switched to batt or mag. The key operates the batt/mag, the switch/lever part is for lights. Negative ground. I suggest you get an owners manual.
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Old 09-28-2019, 10:24 AM   #3
J Franklin
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Default Re: 27 polarity

You should use the battery NEGATIVE ground.
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Old 09-28-2019, 10:39 AM   #4
Royce P
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Default Re: 27 polarity

Every Model T Ford is negative ground.
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