Kissan makes one that is designed for the dual headlights of the F6B. The connections can be a task to install, especially if you are putting them on the high beam so that you can turn them on and off if needed. But the high beams of the F6b can be really annoying (!!), so I put the modulator connections on the low beams (much easier to get to) with a cut-out switch just in case I didn't want them on all the time. I used a small SPST, you just put it inline with one of the sensor wires and it interupts the signal as if it were dark. Switch not really needed, the sensor will turn off the modulation at dusk.

Here is picture of my sensor position. Position is critical due to components under this panel, and best to use a step drill. I put the sensor in a rubber grommet rather than the plastic mount that comes with it.