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At my wits end with this tractor! What am I missing here??

G

greymond

Member
Just did an in frame rebuild. Got it up and running. Starting perfectly firing right up running well. The water temp gauge on the tractor never worked so I installed a new aftermarket gauge. I found power on the two posts on the gauge cluster. The wires were cut by the previous owner. I spliced into one to get power and the water temp gauge worked. I button everything back up and started the tractor. I no longer had power to the water gauge or the two posts on the cluster. Nor did the gas gauge work. I basically had no power to the cluster. The tractor also was running rich and it overheated. That never happened since the rebuild last week. And I ran it off and on since then. I have no idea what I did or if something failed. I did weld on the throttle to get it back together. I just have no idea what is going on here. I am not the best with electrical and I don't quite know what delivers power to the cluster and why that would cause any of theses problems..
please help!

In the lower picture is where I found power on the cluster. That was the only place

mvphoto36844.jpg


mvphoto36845.jpg
 

Lot of quessing going on here... but lower picture probably shows the plug that goes to the starter safety switch and only gets power when the key is in the "start position"?? is this a gas or diesel? I am assuming a 65 to 75 tractor... so.

Normally the cluster gets power through a 3 amp fuse on a wire that goes to the ignition switch. That wire feeds the little voltage stabilizer or little rectangle module on the back of the instrument cluster shown if the first picture and from there to the oil and generator light. the 3 amp fuse is a very short fuse on the c model. That wire on the tractor would be white, going to pin 2 on the ignition switch. Pin one on the ignition switch should have two posts, one from the voltage regulator under the hood and this wire provides power to the ignition switch and is usually a brown wire going to pin 1 on the ignition switch. The wire on the other contact on pin 1 ig switch should feed power to the light switch and its also brown.
 
This is a 67 gasser
i have looked high and low and I cannot find one fuse on this tractor. There is no power at all going to the cluster as of tonight. Hopefully it blew a fuse and I just can't find it. Other than that I am lost
 
I posted that a little premature. Sorry. The only power I can find with my reader is to the oil pressure light. It is the brown and yellow wire that is married to the white white and it is connected to a light.
 
thats a start.. in the pic, the white wire from the right side (oil pressure) comes back to the block on the back which is the voltage stabilizer... on that block there is a double contact where another white wire goes to the ignition switch... and at one point the wire to the oil pressure light should marry with the one from the generator light as both lights feed on the back of the voltage stabilzer per the service manual.

But hopefully you see the power you found go off and on with the ignition switch.... if not the white wire going to the ignition switch has been moved to terminal one instead of terminal two...(really out on a limb here as a lot of wires could be moved around..)
 
(quoted from post at 04:52:26 05/29/19) thats a start.. in the pic, the white wire from the right side (oil pressure) comes back to the block on the back which is the voltage stabilizer... on that block there is a double contact where another white wire goes to the ignition switch... and at one point the wire to the oil pressure light should marry with the one from the generator light as both lights feed on the back of the voltage stabilzer per the service manual.

But hopefully you see the power you found go off and on with the ignition switch.... if not the white wire going to the ignition switch has been moved to terminal one instead of terminal two...(really out on a limb here as a lot of wires could be moved around..)
Click to expand...


The wiring has been a constant headache in this little tractor since I got it. It is a pretty simple wiring compared to most. The previous owner moved around so many wires I have been fighting with it ever since.
 
I replaced the entire wiring harness on my 74 ford 2000.I currently have the rear wiring harness on order for my 70 ford 4000.Nothing like digging around in 50 year old wiring that's been eaten and butchered.Not to mention catching the tractor on fire.
 

BTW... your fuel and heat guage -power through the other terminal on the little voltage stabilzer on the back of the tach cluster. they get a chopped or square wave pulse out of the voltage stabilizer, so a normal volt meter will not measure it.
 

https://www.tractorbynet.com/forums/files/parts-repairs/469352d1463856735-ford-3000-series-electrical-wiring-ford-3000-wiring-jpg[/img]
 
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