I contacted Kisan about using low beams for modulating and they said no problem.
I asked about using a switch on the light sensor cable to be able to run the lows without modulating and that was no problem as well.

Here is his answer:

Mark,

Switch needs to in-line with just one of the wires.

Slit open the black jacket of the Sensor cable
Use the Black wire inside to hook-up the toggle switch
Switch ON to allow modulation - (closed position)
Switch OFF to stop modulation - (open position)

Good luck.

Andy

This what I will be doing. Now looking for a waterproof toggle switch.