PC30MR-2, No start

Turn the key and nothing. No power to the key switch. Need wiring diagram.

Cleaned battery connections, batt is at 12.7V Main block fuse at the battery is good. Checked all the fuses. There are 4 relays in a box R1,R2,R3,R4 I don't know what they do. Safety lock lever switch checks out. Can't find a diagram on line except for one that covers way more machines than I need.

Thanks if you have any info.