My owners manual makes no mention of what bulbs to buy to replace the instrument panel lights. I found the ones from sylvania for the brake, SRS, etc, but not the larger one that does the gauge illumination. The bulb that is in there has the following markings:

OS 12v 10/3 and 37R and 0031 , but I couldn't cross it to anything. I've got the whole thing apart today - need help!!

My '81 uses small bayonet type contact bulbs that are available from the dealer. You can get clear or frosted. The frosted don't shine quite as brightly.

Thanks. Fortunately, the small bayonetts were the only ones that needed replaceing - I still haven't figured out the large ones though...