hey, the socket for the light fixture on the clear lenses are not the same on g20's that didnt come with the clear markers. tThey will not match up. Here is how I solved this problem, dissconect the light housing(the thing that the bulb goes in) from the wire harness on your car. You will notice that the housing has 3 mounds on it that go into the CLEAR lens housing which has 4 holes. Now what you gotta do is cut the 2 smallest mounds off(I used a razor) of the 3 Mound bulb housing. When this is done line the biggest mound up with the biggest hole on the Clear lens and just twist it in.
this may not sound like much sense right now but when you actually take a look at it you'll see what I'm saying.