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Does anyone have any guides on how to make a dimmer for halogen lights? ? Answered

I'm trying to install a dimmer in my car for 2 fog lights. they're about 40 watts each. I would like to be able to dim these bulbs. Thanks.

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Re-design (author)2010-01-19

Most halogen lights are 12V. so look at these.  There are some circuits and some prebuilt dimmers.  There should be something useful here.  You could even use pwm dimming.

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krazieboy (author)Re-design2010-01-20

What determines if a prebuilt dimmer would work or not? I was told not all 12v dimmers would work. If possibile i would love to just locate a cheap dimmer and purchase that. Has to be small though.. under 2.5" in height. and width.

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Re-design (author)krazieboy2010-01-20

Just look for a 12v. dimmer labeled for halogen lights.  It must be 12v. though.

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krazieboy (author)Re-design2010-01-21

does watts play any part in selecting a dimmer? do you recommend a site or any particular product?

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Re-design (author)krazieboy2010-01-22

Yes watts on the dimmer must exceed total watts in you lights.

I would just find what I wanted on the net of locally and buy.  I have no preference over site or product.

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lemonie (author)2010-01-19

You don't dim fog-lights, they're supposed to be bright. Why do you want to do this?
Maybe switch them between series & parallel if you have to?

L

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krazieboy (author)lemonie2010-01-20

I'm trying to customize fog light bulbs into my reverse lights. I want to be able to dim them as not to blind people when full power is not required.

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lemonie (author)krazieboy2010-01-20

Right. Reversing lights should not be red, you would be better modifying the one(s) you have I think. If it's for reversing, mess with what you have for reversing
?

L

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krazieboy (author)lemonie2010-01-21

dont think i ever mention that i wanted them red..... i figured out a way to use 893 bulbs in place of the stock 921.

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lemonie (author)krazieboy2010-01-21

Oh right, I get it now. Go with what Re-design is talking about.

L

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