The original halogen H4 bulb has 3 locator feet to position itself into the lamp housing. Then you install the locking ring to secure the bulb. While the LED bulb has the same 3 locator feet, its detachable from the bulb. You install the locator feet first into lamp housing (put on the locking ring next) then screw in the bulb later. Next you'll do minor adjustments (halogens can't) by twisting the LED bulb a few degrees clockwise or anticlockwise while looking at the beam pattern on your garage wall.
Amarin.
|