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Order Ford 3000 Parts Online

1974 Ford 3000 electrical question

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Rex Simpkins

06-06-2015 17:20:41




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Working on a 1974 3000 for a friend, can someone please help me the positive cable is going to ground on this thing and the negative cable is going to the silenold. Can someone direct me to a schematic that shows what is suppose to be correct????




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Sean in PA

06-08-2015 18:44:14




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 Re: 1974 Ford 3000 electrical question in reply to Rex Simpkins, 06-06-2015 17:20:41  
If it has been charging the battery properly while it was positive ground, then you will need to polarize the generator once you switch it to negative ground for the generator to provide the proper voltage for charging.



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Texasmark1

06-08-2015 05:10:50




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 Re: 1974 Ford 3000 electrical question in reply to Rex Simpkins, 06-06-2015 17:20:41  
My 1965 3000 is neg ground and grounds from the - terminal of the battery through a size 0 wire to one of the bolts that help to hold the steering housing onto the tranny housing, right side of the tractor. + terminal of the battery is available on the left side and with about a 12" size 0 wire, connects to the outboard terminal of the solenoid. Inboard terminal goes to the starter stud.

Don't know why they would all of a sudden go back to ancient history and do a positive grounding setup.

As far as the inst. panel is concerned, you'd have to reverse the power input and ground wires for the meters to deflect to the right in the normal fashion if someone cobbled up the wiring. On the tach and idiot lights it matters not.

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Rex Simpkins

06-08-2015 18:14:18




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 Re: 1974 Ford 3000 electrical question in reply to Texasmark1, 06-08-2015 05:10:50  
Got it thanks, I think I can get it straight from here with that info, if not I will be back Thanks again



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Sean in PA

06-07-2015 04:11:22




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 Re: 1974 Ford 3000 electrical question in reply to Rex Simpkins, 06-06-2015 17:20:41  
Did you follow the cables from the battery terminals or are you just assuming which cable is positive an which one is negative because of the colors of the cables? When I got my '73 4000 it was wired properly but the cable colors were reversed. The negative terminal of the battery was connected to ground, but it was done using a red cable and the positive terminal went to the solenoid via a black cable. I guess that a previous owner had those cables lying around and they were from some other application and the lengths only fit with the colors reversed.

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Rex Simpkins

06-07-2015 16:45:32




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 Re: 1974 Ford 3000 electrical question in reply to Sean in PA, 06-07-2015 04:11:22  
Thanks, I wish it was that easy.



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JMOR

06-07-2015 17:03:14




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 Re: 1974 Ford 3000 electrical question in reply to Rex Simpkins, 06-07-2015 16:45:32  

Rex Simpkins said: (quoted from post at 19:45:32 06/07/15) Thanks, I wish it was that easy.
Is there something not performing correctly. They will run either pos or neg gnd, you know. How are the temp & fuel gauges working?
This post was edited by JMOR at 17:06:35 06/07/15.

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Ultradog MN

06-06-2015 17:36:12




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 Re: 1974 Ford 3000 electrical question in reply to Rex Simpkins, 06-06-2015 17:20:41  
Read the post about 2000 electrical a few threads below.



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Rex Simpkins

06-07-2015 03:56:33




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 Re: 1974 Ford 3000 electrical question in reply to Ultradog MN, 06-06-2015 17:36:12  
Thanks for the reply, never worked on one of these before just helping a friend, on this tractor the positive cable was going to ground on a frame bolt and the negative cable is going to the solenoid post closest to the front of tractor. I am going to install petronix 1231 and an alternator conversion.
I am going to have to look at it again but I think the solenoid post with the negative cable also is connected to the starter post by a short cable. Any help would be appreciated

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