Request: Info about UK rear fog light and lamp housing

[HPsauce]

I've fitted a second foglamp om my UK D2, it's very easy, apart from the reflector!
Everything was there including the wiring, I just bought a bulbholder from our sponsors, unwrapped the connector, fitted a bulb and plugged it in.
I vaguely recall that there might have been a blanking plate to punch out but that was dead easy.

Except...… there's no reflective material on the plastic and no obvious way to take the unit apart easily. So at first it looked relatively dim.
In the end I bought some adhesive metallic tape, cut off little tapered strips of it, fed them through the mounting hole and pressed them into place with my fingers and various tools.
It worked well enough that the two fog lights now appear near enough the same intensity. Occasionally an MOT tester has commented on them but not enough to flag it up, mainly just the observation that there are two.

So, UK-spec cars have a reflector on the single standard (right) side foglamp, but not the left.
But all the wiring is there for both, at least it was on my 1998 PF and subsequent 2002 FL....