KZ900 just stopped no power

I been storing a 1976 KZ900 and got ready for the road test and the bike stopped and now I have no electrical power. Turn on ignition switch and nothing turns on. Checked three fuses out and they look fine. Please help want to road test and ride.

Sometimes the fuses can look ok even though they are not. This is because the filament can detach from the end cap in a way that cannot be seen through the glass tube. I had this happen on my KZ650 just because the fuses were old. To be sure they are good you can either test the fuses with a meter or just replace them with new fuses. Ed

If you have NOTHING working, Time to get the multimeter out. Start with the battery, check you continuity through the multimeter from the battery earth to the frame. From the battery pos to the block in the headlight shell, through the switch, etc, etc. Basically you need to check each part of the loom. You need to pinpoint how far the power is getting through the circuit. Then fix at the point it doesnt.
Third time this week I heard of aftermarket chinese ignition switches failing. Basicly soldered wires into them breaking. If it is that you just need to re solder.

First check the battery ground on the lower right side of the engine. Then check the plugs under the tank and around the neck of the bike. One of them may have pulled loose.

....and check the ignition Switch soldering points/connectors to the wiring, they can go apart over the decades.

The kill switch can also be an issue - just perform a continuity test for the switch - or use a couple of jumper wires to bypass the kill switch.

Jeff.Saunders wrote: The kill switch can also be an issue - just perform a continuity test for the switch - or use a couple of jumper wires to bypass the kill switch.

If it was a kill switch issue everything else would still work

Are you using the stock regulator/rectifier? You could have cooked your battery if your stock RR stopped working.