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1950 Truck ignition switch alternates / alternatives

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pippin

Farmall Cub
Joined
Sep 22, 2021
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New England
Hi guys, I have a 1950 L-122. The previous owner told me that the ignition key switch was bad, and they attempted to hot wire it at one point a couple of decades ago. In addition, he no longer has the keys to it.

I either need to get the original switch repaired & re-keyed, or just replace it.

Can someone give me the details on the specifics of the switch, like how many positions, etc.? Cole Hersee makes similar looking key switches.

Also, once I get the switch fixed or replaced, I will need some help sorting out the wires going to it.

Thanks!!!!

 
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pippin

Farmall Cub
Joined
Sep 22, 2021
Messages
93
Points
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Location
New England
Here's a pic. The CH-M550 looks similar
 

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Greg R

Lives in an IH Dealership
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Lebanon, OR
Here's a wiring diagram. I would throw in a heavy duty toggle for now. The one hot is "B" from the battery "I" goes ignition and "A" goes to the starter push button and wiper switch. A lock shop might come up with a key or a modern switch just won't have all the terminals used such as start position unless you rewired to use the start position.
 

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PHuscher

Farmall Cub
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Waukee, IA
The switch you show, CH-M550 isn't the one you want, assuming you're using the push button on the left side of the dash. The CH-M550 is spring loaded for a "start" position, then releasing to "run", and has no accessory position. I think something along the lines of a Pollak 31-122P or Standard US 11 is what you need. But I could be wrong.
 

Dana Strong

Lives in an IH Dealership
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I think something along the lines of a Pollak 31-122P
It's neat that some people here know these details. I didn't.
Here's a link to a distributor's site giving a side view of the Pollak:


and another one going to the Pollak site showing the back, w/ terminal positions:

 

pippin

Farmall Cub
Joined
Sep 22, 2021
Messages
93
Points
8
Location
New England
Got the new switch. Even the original round nut threads on. It has a nice "action" to it as well. It's not an exact match as the body is fatter. I would consider it an upgrade over the factory switch. Made in the USA too :)
 

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rwk

Farmall Cub
Joined
Jan 29, 2012
Messages
56
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Location
battle creek mi
One thing I do with some of my old cars is the starter button, my original ignition switch was not working in the start position, so I removed the wires and wired to a start button mounted under dash, when car has sat for some time I will crank the engine for a few seconds at a time to build oil pressure before switching ignition on and starting, also is a theft deterrent, button is somewhat hidden.
 
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