have you made sure the battery is definatley ok? does it start the bike if you join the two main red solenoid wires?if so then as crispy says either the main fuse is blown or the earth wire from the battery to the frame is either insceure or broken i reckon ,ahve you tested the wirea at the ignition switch to see if you have a live feed up to it test the red wire on the back of the switch it should be live even with the ignition switch turned off.
adam bike doctor, June 2010