Just added a Headlight Modulator to my VN 1500. Had 2 cars pull out in front of me the last to times I went for my long rides out in the country side. Hoping to say "hey ya'll, look at me" instead of them saying "well I did see ya". here is some pictures of the parts. Took 15 minutes to install.
Parts from Kisan Electronics
plugs to the bulb and the to the wire harness
This is a daytime sensor for the sunlight. Sunlight makes it trigger the flashing sensor.