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Step 2Finding a bulb
First begin by estimating the amount of space allotted for the normal bulb. If you have one that takes a bulb cartage youll have to find a bulb that fits into the cartage if possible. The standard size of the auto bulb fits mine well. Now you know about what size bulb you can buy. (I recommend a 9004 XV from Sylvania, others may work as well. Youll want at least a total of 110 Watts).
This mod "should" work on all projectors that can fit a high power headlight bulb in the area that would normally hold the original projector lamp. Most all newer projectors use a lamp cartridge that houses both the bulb and the non conductive reflector. You would have to find a suitable bulb and insert it into the cartridge. Most automotive bulbs are of the size I used in the instructable. Remember you need A LOT of light output, so a wattage of 110+ at 12v is recommended. (Add the high and low wattage values).The nice thing about my projector, the MVP800 is that is has no cartridge. It uses a glass bulb shaped like a rod with a ball in the center. The reflectors and lens are all part of the projector. (The round reflector closes around the bulb witch has been removed from the projector in this picture)
This mod "should" work on all projectors that can fit a high power headlight bulb in the area that would normally hold the original projector lamp. Most all newer projectors use a lamp cartridge that houses both the bulb and the non conductive reflector. You would have to find a suitable bulb and insert it into the cartridge. Most automotive bulbs are of the size I used in the instructable. Remember you need A LOT of light output, so a wattage of 110+ at 12v is recommended. (Add the high and low wattage values).The nice thing about my projector, the MVP800 is that is has no cartridge. It uses a glass bulb shaped like a rod with a ball in the center. The reflectors and lens are all part of the projector. (The round reflector closes around the bulb witch has been removed from the projector in this picture)
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£36.49 + postage from here is the cheapest I found.
http://cgi.ebay.co.uk/HD-LED-Projector-EXTRA-REPLACEMENT-SPARE-BULB-LAMP-/150591650632?pt=LH_DefaultDomain_0&hash=item230ff63b48
Copy and past that link and you can see for yourself.
I was going to do the same thing, ie buy a used projector with no bulb and make my own, But I decided to buy one of the cheap Abis projectors off ebay.
I was very supprised how good these cheap projectors are.
But be very carefull. I purchased the Abis HDpro for £200 and it has two hdmi inputs, component, composite input, vga and tv tuner input. It handles 720p fine and 1080p with compression 4.3 to 16.9 aspec ratio in all formats. Some other makes don't have all these features. It saved me a lot of hassle trying to make one work the way you have.
But if you are trying leds I would look at the cheap led projector bulbs off ebay.
Lamp Life: UP TO 50,000 hours Total Watts: 96watts (32 High powered LEDs fused onto a cell Plate) and upto 2,500 lumens.