On the GN250. Only 3 and 4 were working. OK, so I can count to five, but I thought I'd have a go at fixing the other three. There's a separate tiny bulb for each indicator light. Suzuki want more than £4 for each one (which includes the rubber push-in mount, although the bulbs themselves can be separated). I hied me to Maplins with a dead bulb as a pattern. WQ13 0177 is a direct replacement, for just over a quid each. Page 471 of the current catalogue, if anyone's interested. No idea what other Suzukis have illuminated gear indicator panels these days, but I wouldn't be surprised if they use the same bulbs.