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Ford 7100 instrument panel

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Loganthefordy
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PostPosted: Sat Apr 10, 2021 4:45 pm    Post subject: Ford 7100 instrument panel Reply to specific post Reply with quote

So I have a Ford 7000, with a wiring problem. When I put power to the tractor the fuel gauge does not turn on. It will stay all the way left or when wired a little bit differently it will go all the way right there is no in between and I have checked the fuel tank it is probably a quarter full, the temp gauge will work most of the time but when wired differently with the fuel gauge it will either be all or nothing. any ideas what to do? Such as hooking it up to the instrument panel or the voltage regulator? Thank you
 
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Hacke
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PostPosted: Sun Apr 11, 2021 3:26 pm    Post subject: Re: Ford 7100 instrument panel Reply to specific post Reply with quote


Do you have a picture of the backside of the instrument cluster?
 
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Loganthefordy
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PostPosted: Sun Apr 11, 2021 3:47 pm    Post subject: Re: Ford 7100 instrument panel Reply to specific post Reply with quote

I actually got it figured out just a bad ground but do have another question, do you know how to wire a one wire alternator idiot light for it? Thanks
 
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Hacke
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PostPosted: Sun Apr 11, 2021 4:16 pm    Post subject: Re: Ford 7100 instrument panel Reply to specific post Reply with quote

I am not familiar with 1-wire alternators, but I suppose you need some kind of voltage/current sensing gadget that drives the light.
I think it is better with a voltmeter gauge, that way you have information about charging and battery condition.
 
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Loganthefordy
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PostPosted: Mon Apr 12, 2021 2:24 am    Post subject: Re: Ford 7100 instrument panel Reply to specific post Reply with quote

Ok thanks for the help
 
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bc
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PostPosted: Mon Apr 12, 2021 6:28 am    Post subject: Re: Ford 7100 instrument panel Reply to specific post Reply with quote

Loganthefordy wrote:
(quoted from post at 18:47:02 04/11/21) I actually got it figured out just a bad ground but do have another question, do you know how to wire a one wire alternator idiot light for it? Thanks


Idiot lights should just have one wire coming in from the sender and are self grounding to the panel. Trace a charging wire from the alternator and splice into it or add another. If no existing idiot light, you can buy the little led lights at the auto parts store that are added by drilling a small hole in the panel. Not sure what you are asking.
 
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Loganthefordy
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PostPosted: Mon Apr 12, 2021 6:39 am    Post subject: Re: Ford 7100 instrument panel Reply to specific post Reply with quote

I would need the light to run like factory so its on initially but then if once the alternator takes over not just constant on
 
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sotxbill
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PostPosted: Mon Apr 12, 2021 6:52 am    Post subject: Re: Ford 7100 instrument panel Reply to specific post Reply with quote

the tractor was wired for a alternator warning light... If it has the same alternator, and regulator from the factory, the wire will be there and needs to be hooked back up. Often the original alternator has been changed out to a self regulating alternator, in which case you will need to run a new wire from the WL lead on the alternator back to where the wl wire at the regulator is and connect the two.
a wiring diagram would help you but remember the 7000 was a one off as it had a slight different hook up due being equipped with an alternator instead of the generator.... Is it a row crop or all purpose tractor?
 
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Hacke
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PostPosted: Mon Apr 12, 2021 8:09 am    Post subject: Re: Ford 7100 instrument panel Reply to specific post Reply with quote

Sorry, my bad. Apparently, I misunderstood the question. I thought it was about a charging warning light for a 1-wire alternator.
 
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Loganthefordy
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PostPosted: Mon Apr 12, 2021 8:35 am    Post subject: Re: Ford 7100 instrument panel Reply to specific post Reply with quote

It has a new one wire alternator that is a Delco remi and its an all purpose, I just wanted to know if I had to wire it differently with that alternator, it had a factory alternator. The voltage reagator when hooked up to battery or constant power off alternator doesnt really seem to regulate the voltage since I hooked up a test light to it and it still lights up no matter what wire I hook it up to on the regulator
 
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Hacke
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PostPosted: Mon Apr 12, 2021 9:09 am    Post subject: Re: Ford 7100 instrument panel Reply to specific post Reply with quote


OK, so I was not that far out. A 1-wire alternator has an integrated regulator and does not need the old regulator. Better run a new wire from alternator to the battery post on the starter, and leave the old wiring as it is, for now.

To be certain about what you have, can you post a picture of the back of the alternator and/or a link to a seller website that shows it?

Some information:
http://www.madelectrical.com/electricaltech/onewire-threewire2.shtml
 
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Loganthefordy
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PostPosted: Wed Apr 14, 2021 6:08 pm    Post subject: Re: Ford 7100 instrument panel Reply to specific post Reply with quote

Here it is
[img]https://forums.yesterdaystractors.com/photos/mvphoto73615.jpg[/img]
 
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Hacke
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PostPosted: Thu Apr 15, 2021 5:40 am    Post subject: Re: Ford 7100 instrument panel Reply to specific post Reply with quote

It looks like a Delco-Remy 12SI type alternator. It has an integral regulator, so you do not need the old regulator.
Under the rubber cap is normally an "R" post used for tachometer, not interesting in your case. At "1" and "2" there might be lugs, even on a 1-wire alternator. On a three-wire alternator the are used for sensing and warning light, but I do not know what their purpose are on a 1-wire.

Maybe you should contact the seller and ask for a wiring diagram?

I suppose you have a Ford 7000, 4-cylinders (a turbo charged 5000), not 6-cylinders?
Did the old setup look like the one in the attached picture (Motorola)?
If yes on both, I have a wiring diagram for it.



 
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Loganthefordy
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PostPosted: Thu Apr 15, 2021 7:08 am    Post subject: Re: Ford 7100 instrument panel Reply to specific post Reply with quote

I think it was a Motorola but has been replaced with the one wire alternator, I do have the 7000 with 4 cylinders with a turbo, and have had a wiring diagram and it didnt work. Any other ideas?
 
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Hacke
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PostPosted: Thu Apr 15, 2021 8:00 am    Post subject: Re: Ford 7100 instrument panel Reply to specific post Reply with quote

Loganthefordy wrote:
(quoted from post at 19:35:20 04/12/21) ...
The voltage reagator when hooked up to battery or constant power off alternator doesnt really seem to regulate the voltage since I hooked up a test light to it and it still lights up no matter what wire I hook it up to on the regulator


I am not certain what the problem is. You run the charging wire to the post on the starter solenoid, to which the battery cable from battery (+) is attached. The old regulator is of no interest when it comes to charging with the new alternator, since it has a regulator inside.

With this configuration, and engine running, you measure the battery voltage between the battery posts, and the voltage should be around 14 V, not less than 13.8 V. You may have to rev the engine up to, say, 1800 rpm in order to get the charging started.
 
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