I have a set of the typical aftermarket small turn signals and they came with 12volt (23) Watt bulbs. I had trouble getting them to work about a year ago when I was playing around with them & I could be wrong but I'm thinking the (23) wattage may be why they didn't work right. Our stock bulbs are (21) watts but won't fit in the small body of the new signals. I thought it would be easy to find single filiment 12 volt 21 watt small bulbs but I have gone everywhere from my favorite industrial electronics supplier, all local Auto parts stores, local Brit bike guy's and I've Googled them & looked on line as much as I can stand but I can't find them anywhere!! Is the 21 watt thing common in England ??? It's sure not here. Does anyone know who sells these in clear or orange? I can't even determine the correct # for them. Please help.thanks.