Well you folks ready for my sob
story. It's been at least two weeks with nothing to show. But was finally able to get a little work done. Lots of pics with "how and why", might get boring.
Pic 1 This is how the Hagen lamp base aligns with tabs, drill holes and install screws (weather bad sat 4/29 when to house)
Pic 2 Back in shop, installed lamp assembly and installed retainer ring.
Pic 3 Drivers side same as pass.