would these replace the existing bulbs??
http://www.ultraleds.co.uk/product_info.php?cPath=44&products_id=301&osCsid=0 22b0caa48d7bc77105875faa56316d6 they also do twist and lock type bulbs and holders that sits in the warning light cluster board
interested cos i have the same problem on my SS- did think of an audible alarm on the indicator circuit