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12 V conversion for lights

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Trevor

07-08-2003 09:26:07




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What do you guys do about your lights when you convert to 12V. Do you simply add a resistor or do you change the bulbs?

Thanks in advance.

Trevor




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VaTom

07-09-2003 03:51:54




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 Re: 12 V conversion for lights in reply to Trevor, 07-08-2003 09:26:07  
Hi Trevor,

I just went through something similar with a trailer, but I needed to go to 24v. Worked out fine with some help from these lists, but watch out where you buy bulbs. I paid $10 more EACH than I needed to, from a friendly participant here. Poorer and wiser....



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Trevor

07-09-2003 06:58:06




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 Re: Re: 12 V conversion for lights in reply to VaTom, 07-09-2003 03:51:54  
Thanks guys. I kind of thought that the bulb solution would be easier but I thought I would ask.



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earlschieb

07-08-2003 20:55:57




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 Re: 12 V conversion for lights in reply to Trevor, 07-08-2003 09:26:07  
I just converted an H Farmall over to 12 volt, I replaced all of the bulbs with a number 1195 bulb with fantastic results.



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Bob M

07-08-2003 14:20:19




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 Re: 12 V conversion for lights in reply to Trevor, 07-08-2003 09:26:07  
Trevor - I've always changed any lamps over to 12 volt. 12 volt bulbs are usually cheaper, and they are more readily available than 6 volt bulbs.

Series dropping resistors can work but they must be sized to match the lamp wattage, they waste power, they can get very hot in operation, and if you have two or more lamps fed from a single resistor, failure of one lamp will quickly cause the other to burn out.

An alternate solution to burn 6 volt lamps on 12 volts is to wire two 6 volt lamps in series. However for this to work both bulbs have to be rated for the same wattage, and at least one of the lampholders (the one on the hot side) must be ungrounded. And of course if one lamp burns out it's mate will go dark too...

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