Well, after all the excitement of my new tail lights finally arriving, put them on, and guess what, they won't pop in. For 2 reasons.

1. The pop in bits are too big. So took the ones out of the old tail lights, and the screw piece for those is too fat for the new one.

2. Were the plug goes in for the parker light, it's too big and won't let the rest of the unit go in properly, because that part comes out further than the original tail lights.