I have a Troybilt riding lawnmower. There is nothing when I turn the key . The battery has been charged. Should their beagroundwire between the cutting deck and the mower?
I is three years old, model 1846.

No ground wire needed. Use a tester to confirm 12vdc reaches the ignition switch and then also leaves the switch when the key is turned. A majority of problems are right there in the switch. If you have power at both places write back and we'll move on time the solenoid and starter.