A little off topic but about bulbs.

My neighbor pointed out to me that I had one bright taillight and one normal and only one backup light on my 73 Squire. Yesterday I investigated. Someone had switched the wiring between the brake filament and taillight on the left side and put an 1156 bulb in the right side backup light socket. Interestingly my owners manual calls for the 1156 however the socket is a two pin type and needs a 1076 two pin single filament bulb. The sockets are plastic so no ground provided by the socket hence the need for two pin, My owners manual may be for a later year model.

I also replaced the side marker bulbs in all four positions which were all black.

Somebody playing with electricity when they shouldn't.

Those little peanut bulbs in the markers & dash have a tendency to go black with age. Some turn a sort of silver color as well. New ones bring the intensity back to normal.
 

Looked around a little bit, you can switch 194 bulbs to 168 and more light output there......... ....Couldn't remember which way was which, I used to sell the brighter ones at the store when people asked for more light.