Figured I'd share some pictures of the conversion here and some pitfalls. I have a 2005 Federal (USA market) Elise, I bought these kits:
Low Beam H1 bulbs (sadly this seems no longer available, not sure where a new source is, I bought the kits about 6 months ago): [ame]https://www.amazon.com/gp/product/B01F35B9JW/ref=oh_aui_search_detailpage?ie=UTF8&th=1[/ame]
Hi Beam H7 bulbs:
https://www.superbrightleds.com/mor...ight-kit-h7-led-headlight-bulbs-conversion-kit-with-radial-heat-sink/2182/4871/
Side by side shot of the low beams vs the stock halogen bulb, there is a lot of extra heatsink on the end, but it fits.
Here are some shots of them crammed in there. The most difficult part is getting the wire clips bent a little bit to wrap around the larger base of the bulb.
The Hi Beams, on the other hand, are a different matter. The heat sinks just do not fit in the 2005, so I had to unscrew the fans and cut off some of the threads. We'll just have to wait and see how long the bulb will last, I'm sure they'll get hotter, but frankly the threads can't provide that good a thermal contact connection so I am hopeful it wasn't doing much. I have popped a spare halogen in the trunk in case they burn out on a trip, but getting to the headlights is no easy task in this car so I'd probably just have to make due with the low beams and limp home if they both went out. I can't imagine they'd get a lot hotter than the halogen bulbs that usually go in there, so I am not really worried about the components of the car.
Side by side shot of the old halogens vs the LEDs:
Let me know if anyone find a smaller H7 bulb to go in that hi beam spot.
Low Beam H1 bulbs (sadly this seems no longer available, not sure where a new source is, I bought the kits about 6 months ago): [ame]https://www.amazon.com/gp/product/B01F35B9JW/ref=oh_aui_search_detailpage?ie=UTF8&th=1[/ame]
Hi Beam H7 bulbs:
https://www.superbrightleds.com/mor...ight-kit-h7-led-headlight-bulbs-conversion-kit-with-radial-heat-sink/2182/4871/
Side by side shot of the low beams vs the stock halogen bulb, there is a lot of extra heatsink on the end, but it fits.

Here are some shots of them crammed in there. The most difficult part is getting the wire clips bent a little bit to wrap around the larger base of the bulb.


The Hi Beams, on the other hand, are a different matter. The heat sinks just do not fit in the 2005, so I had to unscrew the fans and cut off some of the threads. We'll just have to wait and see how long the bulb will last, I'm sure they'll get hotter, but frankly the threads can't provide that good a thermal contact connection so I am hopeful it wasn't doing much. I have popped a spare halogen in the trunk in case they burn out on a trip, but getting to the headlights is no easy task in this car so I'd probably just have to make due with the low beams and limp home if they both went out. I can't imagine they'd get a lot hotter than the halogen bulbs that usually go in there, so I am not really worried about the components of the car.


Side by side shot of the old halogens vs the LEDs:

Let me know if anyone find a smaller H7 bulb to go in that hi beam spot.