Hustler safety curit

Hello, my z won't restart after mowing. I think it's in the safety circuit.. the schematic does't have the wire colors listed. I have jumpered out the seat switch and have checked the control arm switches.. also was wondering if the switches are completing the circuit or grounding out the circuit. Could this be in one of the relays? Wire color would help here. I've jumped the starter and turns over good but won't start...doesn't it need 12v. to the ign/run circuit? Getting ready for a graduation party and need to mow soon..