the back light on my rev counter has blown. (90/mk2/16v). mfa and speedo still fine. I have loosened the clocks but can't fully withdraw them although I can pivot them down. are the two bulbs at the top of the back of the clocks the only ones for the speedo / rev counter? cos I can replace these without pulling the clocks out fully.... (would try the other bulb but I think I just fecked it)