drewpy

for reference you can get diaphram kits from NRP in Manchester UK for your bike http://www.cameron-site.co.uk/nrp/yamaha_c..._diaphragms.htm

hi, if all electrics have gone did you check the main earth lead? I would also get yourself a multmeter (£2.50 from Maplins at the mo') and work from the battery, checking every lead for power. there is no easy answer to this, just methodical probing. Have fun