The Ford Barn - 27 polarity

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- Model T (1909-1927) (https://www.fordbarn.com/forum/forumdisplay.php?f=2)

- - 27 polarity (https://www.fordbarn.com/forum/showthread.php?t=270117)

thrifty

09-28-2019 09:28 AM

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?

redmodelt

09-28-2019 09:59 AM

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.

J Franklin

09-28-2019 10:24 AM

Re: 27 polarity

You should use the battery NEGATIVE ground.

Royce P

09-28-2019 10:39 AM

Re: 27 polarity

Every Model T Ford is negative ground.

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