Hi, I am trying to source a replacement left handlebar switch for my '76 CB550K US import project bike. David Silver only seem to do the right-hand side unit. I can see there are a number of eBay sellers selling new repro ones, most of which look really rough with blobby red paint dodgy-looking buttons. Can anyone recommend a supplier I could use; I need the wires to be 'in bar' as opposed to external wiring. Im fine with a reproduction unit provided its a decent quality. Many thanks