Headlight issues

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SSOcub
Posts: 8
Joined: Mon Apr 12, 2021 4:57 pm
Zip Code: 54449
Tractors Owned: 1948 Farmall Cub
1949 Farmall C
Circle of Safety: Y

Headlight issues

Postby SSOcub » Mon Apr 12, 2021 10:34 pm

I have searched the forum and couldn’t find anything on this so I apologize if it has been discussed. After I painted and rewired my cub one of the headlights is dimmer than the other. If I switch the bulbs around it doesn’t make a difference but if I take the brighter bulb out the dim one gets brighter like one light is robbing the power from the other. Has anyone ever had anything like this before? I will be taking the hood off my cub soon to rebuild the touch control and would like to resolve this issue right away as well.
1948 Farmall Cub
1949 Farmall C

Nelson 634
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Joined: Thu May 24, 2018 9:57 pm
Zip Code: 22958
Tractors Owned: 5 Cubs
1952 100
1960 460 Utility
Location: Central Va.

Re: Headlight issues

Postby Nelson 634 » Mon Apr 12, 2021 10:49 pm

First guess would be a bad ground. But as you stated you "rewired it" I would also check all the connections to the lights circuit. A jumper from the ground side of the affected light to a good ground will rule out a grounding problem. A jumper from the starter terminal to the hot side of the light will check the hot side and your wiring.
Walter

Nelson 634
Cub Star!!
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Posts: 307
Joined: Thu May 24, 2018 9:57 pm
Zip Code: 22958
Tractors Owned: 5 Cubs
1952 100
1960 460 Utility
Location: Central Va.

Re: Headlight issues

Postby Nelson 634 » Mon Apr 12, 2021 10:58 pm

If you have a six volt system use 10 gauge wire for your lights and your jumper wires. Remember the lower the volts the higher the amps and the need for a larger wire.
Walter

Bob McCarty
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Re: Headlight issues

Postby Bob McCarty » Mon Apr 12, 2021 11:00 pm

You may have "new" paint under a ground. Suggest you check that.
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we need to think differently."
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Jim Becker
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Zip Code: 55319
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Location: MN

Re: Headlight issues

Postby Jim Becker » Mon Apr 12, 2021 11:08 pm

Those exact symptoms are a little strange. So there may be more than one thing going on. You probably have a bad ground on the dim light. You may also have a high resistance somewhere in the power feed to the headlights (maybe in the light switch).

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John *.?-!.* cub owner
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Tractors Owned: 47, 48, 49 cub plus Wagner loader & other attachments. 41 Farmall H.
Location: Mo, Potosi

Re: Headlight issues

Postby John *.?-!.* cub owner » Tue Apr 13, 2021 9:11 pm

If it is one of the headlight switches with the fuse mounted on the back, clean the clips that hold the fuse.
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