Rear work light mystery

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Tractors Owned: 1950 Farmall Cub
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Rear work light mystery

Postby rod330 » Tue Oct 17, 2017 6:23 am

Here are photos of the rear work light on my 1958 International Cub LoBoy (6 volt). The prior owner stated it needed a new bulb. While that's true, it also needs the bulb socket assembly. Once I removed the red lens, the lamp body was completely empty. Lastly, there are 3 mystery wires on a terminal strip by the lamp housing. I haven't broken out the multimeter to test them yet but I presume the light was grounded to one of these 3 wires rather than to the lamp housing. I won't really need a traditional rear work lamp but having the red "warning" lamp for snow plowing during daylight hours would be nice.
Is this some generic lamp that a prior owner installed or is it original? Any suggestions for locating a bulb socket assembly? Perhaps it's a simple trip to NAPA?
1950 Farmall Cub, 1958 International Cub Lo-Boy

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Re: Rear work light mystery

Postby Urbish » Tue Oct 17, 2017 6:44 am

According to this site ( the Grote Lite was used on later Cubs, Lo-Boys, Numbered Lo-Boys, and Cub Cadets. I'm not sure if it's appropriate for a 1958, but you should be able to wire it up without issue, so long as you can preserve the positive ground.

Also, it shows up as item #9 (IH p/n 376850-R1) in this Numbered Lo-Boy lighting diagram

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Re: Rear work light mystery

Postby tst » Tue Oct 17, 2017 7:09 am

that light is correct, it was just a taillight only, the work lights you had to order extra, the extra wires are already there for the work light with the red bulb option

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Re: Rear work light mystery

Postby Glen » Tue Oct 17, 2017 7:36 pm

Below are pages from the 1959 Cub and LoBoy owner's manual showing the wiring and rear light. ... age-29.jpg ... age-31.jpg

Below is the 1959 Cub and Loboy owner's manual, the experts on here recommend that people read it, it has much info. :) ... index.html

Below are pages from the Cub parts manual showing the lights for Loboys serial number 10000 and above. ... 008-13.jpg ... 008-14.jpg

Below is the parts manual page showing the combination work and tail light. Some of the numbers in the pic do not match the numbers in the description. :) ... 008-21.jpg

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