Hi all
My diff lock warning lamp and main beam warning lamp have blown in my 90. It’s an early one with the sort on papery circuit board, and I just wanted to confirm that the part number for replacements is AMR 3339.
IIRC the bulb holders are little plastic things that fit with a quarter turn......
Cheers

Are you sure they have blown, the board gets a bit corroded give them a look first.