H headlight bulb

Can you tell me the part number for the H 12V headlight bulb?

Thanks.

There are no 12 volt H light bulbs as all H's were 6 Volt from the factory. If you still have a 6 volt bulb or a burnt out 12V bulb take it to a real auto parts and they can match it. If you don't want to do that you'll need to figure it out. Is this an original HI/LOW light? If so you'll need a twin element bulb. 2 element bulb-now look at the pins on the side of the bulb that hold it in, are they straight across from each other or staggered (two element bulb is probably staggered so you can't put it in wrong). If it's got sealed beams take one down to your auto parts and let them look it over.

By the way the standard twin filament light bulb is an 1157, that's what is used in tail lights and turn signals, that's the old style bulb with the metal base, newer cars use a plastic bayonet style, IIRC old tractor lights used them too, at least out JD A did, all of our Farmalls ran sealed beams, but they weren't OEM we retro fitted them on to the tractors, that was 30 years ago. The single filament bulb is an 1156.

Various manufacturers have on line catalogs that will let you figure it out Sylvania is one of them. That will also give you information about variations and LED retrofits if you're thinking about going that way. The newest H is now over 60 years old, don't be surprised to find out you don't have factory lights anymore, we know you don't have the factory generator or voltage regulator anymore.

I think I put 1156 in my Super M, that's a backup light bulb for older cars.

If you're talking about the factory lights, 1133 is the stock 6-volt bulb and 1143 is the stock 12 volt bulb.

1156 will fit 12 volt applications. Several other 32 candlepower single contact bulbs will, too. Bulb design/shape and filament orientation is different than the original, though.

AG

Seriously? The first response to the question is, "There are no 12 volt H light bulbs as all H's were 6 Volt from the factory?"

Is it really that much of a mental stretch to conclude that the tractor has been converted to 12V and he's trying to make the lights work?

Gents, life is too short for this "grumpy old man" baloney. I had to put up with a bunch of it over last weekend, and I'm fed up. It causes more problems than it resolves.

When your response involves, "We've always done it this way, and it can't be done any other way," or variations on that theme, strongly consider keeping your opinion to yourself.

1156 or 1143 bulbs are both good alternatives. The filaments may not be oriented exactly right for the correct police, but they will shine light.

(quoted from post at 15:04:49 07/01/14) Seriously? The first response to the question is, "There are no 12 volt H light bulbs as all H's were 6 Volt from the factory?"

Is it really that much of a mental stretch to conclude that the tractor has been converted to 12V and he's trying to make the lights work?

Gents, life is too short for this "grumpy old man" baloney. I had to put up with a bunch of it over last weekend, and I'm fed up. It causes more problems than it resolves.

When your response involves, "We've always done it this way, and it can't be done any other way," or variations on that theme, strongly consider keeping your opinion to yourself.

1156 or 1143 bulbs are both good alternatives. The filaments may not be oriented exactly right for the correct police, but they will shine light.

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1143 isn't an alternative. It was factory equipment for the 12 volt M diesels. 1156 is a readily-sourced bulb, and probably the best alternative if you can't find an 1143.

There are probably a dozen or more 12V single contact bulbs that that on paper that will put out the same light. If you just want to "shine light", pick any of them. There's many reasons that there are a dozen different ones.

AG