Just installed them. Huge heatsinks do make it difficult to put in, but not impossible. I just put them all the way in the headlight housing, then got the tip of the LED in. Took a couple tries to get the threading right as there are 2 large notches and one small, but the red wire should be facing to the sky for each side so it makes it easy to line up. I got them started just barely, then used some pliers to turn them once on. Took 10 minutes for the drivers, little less for the passengers.
Look great. As good as Lux? No, but are Lux's 4x better? Nope. Looks great for the money.