The summit kit is 2 relays 1 for hi 1 for low that take the load off the stock headlite switch. The stock switch now only powers the coil of the relay when the headlights are on. I have had so many burnt headlite switches till i did the summit relay kit now life at night is so good.
So the fisher module takes the load for the plow lights and the stock lights?
If so i would like to remove the summit kit.