I was clearing brush with my L5450 last weekend and thought about your thread. Are you talking about the light on the left side? I have never seen mine on.
Yes, they are good tractors. Very solid. If I recall correctly on the schematics of the clutch PAC, the foot clutch does the same thing as putting the shutting hand lever in neutral. Except that it is ahead in the circuit, but also operates the wet clutch PAC. No dry clutch. I could be wrong.