'47 Farmall H Dash switch

wfd2 · Sep 4, 2009

Hello,

I'm in the process of rewiring my H and I forgot the switch positions on the dash. (The H, L, etc) positions. It still has the 6v system.

Also, I noticed that there are some H's with a 3 position switch and 4 position switch. Which is proper for a 1947? I have a regulator that isn't mounted on the generator, but I think someone mixed a Super H system with the original '47 H.

Can someone please help?

As always, I'm thankful for your help as I'm a new owner!

Bill

Mike CA · Sep 5, 2009

Later H's had a VR mounted on the gas tank mount, towards the operator. It is my understanding that VR tractors had 3 position light switches, and Cuttoff Relay tractors, which had the relay mounted on top of the generator, were 4 position.

Here is a picture of an M with the 3 position switch. I believe the 3 positions, from the bottom up, are Off, Dim, and Bright. Hopefully someone smart can verify or correct that.

I'm in the process of restoring my electrical system as well. The previous owner rewired my tractor with cheap, aftermarket harware, and it wasn't working properly. I'm putting in a 12v genny, and rewiring it with lights, and a 4-position switch.

Tom Fleming · Sep 5, 2009

here's a picture from what I believe to be an original finish 1942 H electric box:

wfd2 · Sep 5, 2009

Thanks Mike & Tom!

Mike, I believe "off" means lights off, correct? Not charging system off...

As I said, my '47 H is still the 6v system. I considered transfering it to 12v for better charging/starting but haven't done it yet. I'm not sure the 6v system even works because someone removed all the wires. (I think the VR, generator, or both is fried otherwise why would a previous owner hack out all the wires??

I'm also having problems with starting system. The starter turns over very slowly or not at all, even with a new, charged 6v battery (I checked, it's now ~6.3v). The wires to the starter get warm. Another person said to check the ground to the starter-- it could be a bad pos. ground. I'll check that tonight.

Tom Fleming · Sep 5, 2009

6 Volt starters require heavy copper wire. Twice the ampacity of 12 volt. It also requires VERY clean connections. I always use dielectric grease when putting electrical contacts together. Keep the moisture out, and the corrosion down.

IMHO.

'47 Farmall H Dash switch

wfd2

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Mike CA

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Tom Fleming

Well-known Member

wfd2

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Tom Fleming

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