2006 Troybilt zero turn

Not having an engine issue. Recently had to replace pto switch, then ignition switch, then solenoid. After observing I find that the red wires on the ignition switch and pto switch get very hot when the pto is engaged. Engine runs, but those wires get hot just by turning the ignition on without starting and engaging the pto switch. I’m afraid to use it because I know it will damage more or even catch on fire.