Thanks Konrad, I've ordered another USB-RS-232 converter with the FTDI chip, fingers crossed. Can I also say have 8 TRi in various states of repair, your OSSA site has been a wealth of useful knowledge. Here in the UK information is not always readily available. I have managed to acquire lots of new old stock parts, but it's always the case that the part you want isn't easily sourced. Like the fuel level sensor! I've just stripped a bike to restore and that little plastic blighter snapped in the fuel tank! Have to cross reference this part at all to replace one?
I will let you know the outcome of the K-Scan