Dim rear lights

[Mick 68]

My brake light and rear blinker (LHS) are really dim while the (RHS) work perfectly.

Any suggestions on how to fix this problem?

The car is a 1968 1750 series 1 coupe

all suggestions are welcome.

[alfaparticle]

Sounds like a poor ground connection on the LHS. Clean the metal where the black wire is attached to the car body. It is most likely corroded.
My old 73 GTV had dim rear lights and I found that I had volt drops across connectors and wiring. I installed relays in the rear and switched power from the trunk mounted battery. Then I had bright rear lights.
Ed Prytherch
74 GTV - for three more weeks
79 Spider
88 Milano Verde