At least there is some click. It is strange that the immobilizer led isnt flashing. I think the best thing to do it to download the service manual (u can google it, i think it also should be somewhere here). Go to page 8-35 there it is written step by step what to do. U just continue at step three (checking the main switch). Did you also check the battery power? U should measure the battery voltage when you turn the motorcycle on and see if the voltage drops significantly. If it drops and the voltage doesnt increase anymore than your battery is bad or empty or you have a short circuit.