I have a 2003. Supposedly these plug right in. Any thoughts or experiences you’ve had with these, or gone from halogen to LED in general?

Got these to replace some headlights. Chose them because they are passively cooled (no fan), and on the dimmer end for LED replacements (since they are marketed as fog lights). They are still brighter than 55 W halogens though. I don't have any numbers for this since proper testing is a bit involved. But subjectively comparing plus some attempts at comparing with my phone's light sensor both have the LEDs on top.

Just a note about LED replacements for halogens: they aren't blinding for other drivers if you use the right ones and install them properly. This is especially important for reflectors, but still matters for projectors. The LED bulb's diodes should be very close to the same position as the old halogen's filament, and there should ideally be a shield blocking light from going straight forward. Most LED replacements will have two sets of emitters at 180° from each other. These should be installed to be horizontal.

This set cost me $24, which is just about the same price as mid range halogens (Sylvania H11 XtraVision are $24 on Amazon right now). But, the halogens I am replacing use 76 W each at 14.5 V (my alternator voltage) while the LED bulbs use 14.65 W, for a difference of about 120 W. That's about $60 savings in gas over the life of a typical halogen bulb, and LEDs (when implemented properly), should last many times as long as a halogen.

You can see the bulbs themselves on their product page: https://www.amazon.com/gp/product/B079NSBTF8/

These bulbs have a screw to rotate the collar around the bulb to adjust the angle, but unfortunately the two holes in the collar are just about 180° apart and so nearly useless for that purpose. Maybe because they are marketed as fog lights. The collar is plastic though, and its easy enough to drill an extra hole where needed. Besides this, build quality is decent/good.

They seem to be trying to hide that the driver for the bulbs is external, and sits at the end of a short cable. This is a good thing in my opinion though, since it gets the electronics away from the heat of the bulb. Might be a problem in some smaller clearances though.

The driver is potted, but I decided it was worth opening up:

https://imgur.com/fy4vRoq

The right 20% is just to make the plug non-polarized, since apparently plugging in the right way is hard. The rest of it seems to be a basic buck converter. Nothing fancy, and nothing really of much concern. I don't know enough to be a good judge of that though. Here it is under a thermal camera:

https://imgur.com/PAz2L1t

What is a bit concerning is the bulb's temperatures. Measuring with an infrared camera can be quite a bit off depending on the surface, but that doesn't seem to be the case here. I'm showing a peak of over 140 ­°C at the diodes themselves.

https://imgur.com/bmmGuhp

It's not so hot that I expect failure very soon, but if I had to make a very rough guess, I'd expect a life similar to a halogen.

Overall, I'm fairly ambivalent toward these. I expect that they will be well worth the price compared to halogens, and the quality of lighting is a huge improvement (both color temperature and brightness). But I don't see any way these last nearly as long as they could with just a little more effort. Unless they fail early, I'd gladly choose these over even the premium halogens that cost 2-3 times as much, but at the same time I'll be looking out for the better LED solution that *should* exist.

Oh, customer support is good at least. Another reason I chose these is because their product page shows the LED boards being secured with screws, which would have been nice for disassembly. Not the case though. When I contacted them about the discrepancy, they were quick to offer to send another set of F2's as replacements. Doesn't make much sense if the replacements are exactly the same though. They ended up sending a set of their S1 headlight bulbs for testing instead. I expect they will be similar, but a bit brighter and likely hotter. I'll almost definitely just keep using the F2's since I don't need any more brightness.