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EFV-8 Club Forum / General Ford Discussion / Reverse polarity

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Discussion Topic: Reverse polarity -- page: 1 2

46coupe

06-25-2022 @ 2:55 PM

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Leaving the wiring as is, the starter should work. Possibly the starter is the problem. It had made a weird noise and then just clicked afterward. It was after that I checked and replaced the solenoid.
Thanks to you and everyone else who has offered help on this project.

TomO

06-25-2022 @ 2:21 PM

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The cable going from the NEG battery terminal to the case of the starter is providing the ground for the system. Moving it to the top of the starter would cause a short circuit. I would not change any wiring unless you want to go back to POS ground.

I suggest that you find a reliable mechanic and have him diagnose and repair your problem. It will be repaired faster that trying to get help over the internet.

Tom

46coupe

06-24-2022 @ 9:13 AM

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As of now the negative battery cable is attached to the starter face as shown in the picture. The cable attached to the top of the starter is attached to the driver’s side of the solenoid. That sure doesn’t sound right. FYI. When I got the car and purchased the restoration guide book, I noticed that the starter was painted green which means that it was for a 6 cylinder engine. Could that have anything to do with the problems I’m having?
I’ll hold off moving the negative cable to the top of the starter until I hear from you or another member.

TomO

06-24-2022 @ 7:53 AM

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Do you have a cable connected to the top brass bolt on the starter? I cannot tell from the photo.

Where is the other end of the cable connected to the mounting bolt connected?

Normally the starter just has one cable coming from the solenoid to the brass bolt on top of the starter. The Grounding of the starter motor is accomplished through the mounting face of the starter.

Tom

46coupe

06-23-2022 @ 7:48 AM

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I've attached pics of the solenoid connections and the starter connection. I was thinking of the other connection on top of the starter. I don't see any bare wire or that any of them are too close where an arc would occur

TomO

06-22-2022 @ 4:14 PM

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There is only 1 cable going to the starter. It comes from the passenger side of the solenoid. Check it for bare spots and at least 1/2" clearance to any metal parts.

Can you post another photo of the wiring of the solenoid and the cable going to the starter?

Tom

46coupe

06-22-2022 @ 11:59 AM

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The battery is four years old showing a charge of 6.3 volts. I finally got time to switch the wires as suggested and I got lights. Tried the starter and heard a pop like a short makes. I’ll check the starter when I can get the car lifted. I might have to switch the wires there as well? I haven’t touched the regulator to do the polarity yet.

37RAGTOPMAN

06-22-2022 @ 10:39 AM

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I was wondering if the battery is new,
or if it is old and was dead and charged,
it might have been charged in reverise, so the car would have worked before,
it would have to be completely drained and recharge backwards,
just a thought,
my 2 cents 37Ragtopman

TomO

06-21-2022 @ 5:57 PM

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short answer: swap the battery and starter cables, I don't know how it could have worked wired this way. You need to read my complete post until you understand it.

Reversing polarity may require a new coil as well as polarizing the generator.

Tom

This message was edited by TomO on 6-21-22 @ 6:06 PM

46coupe

06-21-2022 @ 1:33 PM

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Hello,
I have the shop manual the club sells plus a shop manual for the 1939-48 Ford and Mercury. I did not refer to them because the car had been working with this wire setup since I bought it in 2015. Did you read my post to Tom ? I just hope you or he can answer my question. I will reverse the set up as you all have said. I'm just curiouos as to why it worked before.
Thanks to you all I should have it running tomorrow as I can't get to it today.

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