Thanks Sandman the smaller filament is the one lighting up which was also the case when I had the black wire hooked to black on the bike. The only difference being the light was very dim and flashing very fast. I havnt pulled the guts out of one of the indicators, my first aim to determine what was what, but it didn't come apart easily so i didnt want to force it. It sounds as though it will be ok as it is.
