You don't want thermo wires connected to anything as you can't get a good reading. Just need to see if power is going past light. Light only comes on when tstat calls for heat. Need to know if it is getting power to turn stove on. Don't want you buying a control box if you don't need one, but am betting you do. We need to follow power route.Make sure outlet is working, check for power at the black wire from the power cord. If there, check for power at the grey wire on the 7 amp fuse holder. If power is there check for power at he grey wires on snap disc #3. If power is there, time to replace control box.