Hi there.
Is this still needed? I'm going through my 4x4 CC from end to end on a 30 year refresh. While it's in lots of pieces I'm making a list of all the bulb for possible LED upgrade. Many are straightforward P21/5W, P21. H4, H3, W5W etc but occasionally there are oddities (one of the corner front lights is a P35/5W with a white cap that looks stock, with the other being a boring old P21/5W and I have a natty double 6W fluorescent unit in the cabin with interesting circuitry). I'm unsure about putting LEDs in the dash and many of my illuminating dash bulbs were not working. Currently the dash is out (fun, not).
The last bit here is that some of the door festoon lights could be improved for safety and better immumination but I think it's best to use red LEDs in taillights (if it's possible) as the colour spectrum of white LEDs with a red reflector results in poor visual perception of the result, I'm told.
Anyway, if you still ned the volunteer, them I'm very keen.
Cheers.