I have a walker MC with a 20HP Kohler. I get nothing when I turn the key. New battery, new relays, new switch. I don't see any frayed or broken wires. Safety's seem to be working. I haven't tested but when you push the PTO safety you can hear the relay clicking. Same with the Neutral. Seat safety shouldn't matter for starting. The starter was new last year and it spins when you jump straight from the battery. No power at solenoid when key is turned. I'm not the best with wiring not sure what to check when. I can use a multimeter, just need to be pointed in the right direction.