any bulb will flash brighter. i don' think there's any way around that.
i just bought my clear bulbs at k-mart [ definetly k-mart ].
i don't remember the number. you should be able to get the number at any auto parts store. if you would spec bulb for a '92 300e, [since it had orange covers] chances are it would be clear any way.
i'd just go to k-mart, wal-mart, auto parts store to get them.
it does need to be a dual filament bulb.
*92 400e 124.034, SOLD
*92 300e 124.030, SOLD