I had issues with my rear brakelight and have fitted a new pressure switch to the mastercylinder on my 1967

New brake light switch fitted…. the old one was almost stuck , rusted tight .

status:

when i hit the brake pedal engine running with light OFF , right brake liight wery sharp, left only half the light but visible

HEADLIGHT ON: left brakelight stay ON , WITHOUT pedal pressed,? I press the brake , then the right light up the same level as the left…..

I have tried to reverse the wire on the brake switch , the problems also reverse?

I have tried several bulbs same watt , but different brand, the car is very sensible for what kind of bulbs I put in, ( but this is the best i can get)

the 2 filament bulb can only go one way in, and it have the 2 wires to the left bulb holder as in the diagram
all bulb holders etc, grund CLEANED good.

can the pressure switch be adjusted in/out for better function

any ideas?

rg.Lars