This is on Richard Atwell’s “Essential Upgrades” list for a reason. The following is the process I went through to install the Bosch headlights that I bought from BusDepot.com. You can also correlate this with the Bentley manual (Section 4, Pg. 26, Part 8.1)
Time: 20 minutes
Tools: Phillips screwdriver (Size P1 and P2)
2 each – Bosch H4 Headlight – Part# 0301600118
2 each – H4 halogen bulb 55/60 watt – BusDepot.com Part# 78155
Remove the phillips screw from the inner portion of the headlight trim ring with a size P2 screwdriver. This is the only screw holding the trim in place. The Bentley manual states that the screws are a permanent fixture of the headlight trim and can be used as a handle to pull the trim gently away from the body. My screws came straight out of the trim.