Bulb holder twists out from the inside. Half turn or so then pull.
I'll check mine today...Here's what new ones look like. These are Bearmach and closely match the crusty ones I pulled off. These are taped on, and the original were also some sort of adhesive plus some push on type nuts over the plastic spikes.
define PITA, I Inserted a set of set of D2 fender mount turn signals on my classic, same spot juat ahead of doors.interesting,
I have been looking into adding them to my 90 (2.5NA bodywork didn't have holes for them/side air intake).
Wonder if they would be a PITA to drill and add, the later style TDCI ones fit in the bodywork in a pretty specific manner.