Lights and wiring issues M38A1 CDN 53

[Casey B]

Okay have wiring insulation that is crumbling on rear lights... right at the light.
Any idea what gauge wiring this was?
Can the pin connectors be removed and reused?#1 pic
The small little tit that was soldered in the light bulb holder that touches the centre of the bulb is this removable as well or just a ball of solder? #2 pic

All the stainless screws broke on the pass side rear light not so on the drivers side. I was going to replace the pass side with a three bulb lens so I can have two brake lights. One brake light on the west coast confuses our newer drivers...they think you are signaling to the left every time you brake.
So if I can drill out the screws I'd be looking for the top two light guts and the lens. Or a whole new three bulb light...?maybe easier eh?

Now not sure about the lights either in the 3 light there are tow lights on the Top... a brake light to the right and the other one the left is...? rear tail light?non balckout? wasn't working and could not get circuit to work. #3 pic
The bottom light being the Blackout out red lens.

here are the pics to show you the lights.
On the front black out drive light ...can you remove the front plate and visor to clean the glass or is this permanently closed with a seled beam inside? Also was this supossed to be painted balck or the jeep baody colour? #5 pic

Any thoughts greatly appreciated...casey