I was interested in the post above from MerthO, back in April, especially about getting the reflectors from the back of the projector units re-silvered. However, with him being in the Czech Republic, I didn't think it was asking where it was done, for anybody here in the UK.
I've just watched an old episode of Car S.O.S., which featured the restoration & conservation of an old British Army 1941 Austin 10 Tilley Utility Truck (Series 5, Episode 10). It showed them taking the headlamp units to a classic vehicle headlamp restoration business in Birmingham's Jewellery Quarter, called
"Genius of the Lamp". They showed the re-silvering process for the reflectors on those. I have looked online and although the show was a few years old, the business is still going, if anybody else thinks it would be worth trying to get it done on Puma headlamp dipped beam reflectors. Of course, it would need the whole projector & reflector unit being dismantled, which I think from memory was riveted together. Possibly this business could dismantle, re-silver and reassemble, as they appear to restore classic vehicle lamps, rather than just re-silvering reflectors!
While I still had my old Puma, I hand polished the outside of the clear polycarbonate outer covers with a plastic cleaner and UV Protection polish, which did really improve their look on the car. I did also get as far as cleaning up the inside of (just) my drivers side lamp. I split it and cleaned all the traffic film from the inside of the outer cover, the front & back surfaces of the projector dome and as best as I could, of the reflector. The reflector was probably worse than the "before" image from MerthO's post and photo's above, with worse tarnishing than his.
Over the years, in desperation, I did try various and ever brighter higher brightness Xenon bulbs (+130%, +150%, +200%, etc.) which did improve light output a bit, but never seemed to be as good as when the car was new! Unfortunately, the higher output bulbs seemed to cause heat damage to the wiring connector plugging into the dipped beam bulb and I had to use those HB3 replacement connector plugs & wiring tails, which are marketed as "ceramic", but aren't really! The strange thing is, that only ever happened on my drivers (right) side headlamp, not the other one!
I really can't remember my Puma ever having such poor headlights from new, certainly not until the first dipped beam bulb blew, at just under 5 years old. Until then it had never been an issue! That makes me think the poorer and poorer light output, seemingly getting worse the older the car got (despite the ever increasing output Xenon bulbs I tried) was probably down to the gradual tarnishing of the silvering of the reflectors the bulbs are plugged into! Maybe decreasing Earthing efficiency also, but I never got down to proving that to myself!
Is anybody prepared for any possible expense to give re-silvering a go and report back? Oh, the thought of feeling safe driving a Puma at night again, might be worth it?
I have been Puma-less for coming up to 3 years now, but still hold out hopes of getting one again some time, but being able to enjoy it at night as well!