Signal Dynamics01015 Headlight Bulbs & Assemblies, Black

I have three of these. I know 100% that they work to make poor drivers see you, I have countless examples of people doubletaking and then braking when they should have all along. Recently my oldest unit stopped working after 6 years, and wouldn’t you know it, someone looked right at me, failed to yield and pulled directly into my path in a traffic circle. I was able to avoid hitting them but as soon as I got home I contacted Signal Dynamics via their website and explained that the unit had stopped working. The very next morning I got an email stating to send the unit back to them for testing/repair/replacement, they didn’t even ask for a receipt. Cost me $4.50 to mail it. Five days later I had a brand new unit sent to me free of charge ready to be plugged back in and it’s working great again. I can’t say enough good things about this modulator and especially about this company and their customer support. Get one, it may save your life.

Excellent safety device. I found it relatively easy to install. I was able to fit the unit and the required harness inside the headlight housing of my '07 Honda Shadow. I immediately noticed a massive decrease in the number of people pulling out in front of me from side streets, as well as people changing lanes right in front of me. I printed out and laminated a copy of the law making these legal in all 50 states and keep it in my saddlebags, but I have not been pulled over thus far, despite riding right past multiple police officers. This device is not magical, and it is not a substitute for defensive riding practices. However, it makes a huge difference, and I would highly recommend it, especially to those who ride in urban areas with heavy traffic. Hope this helps.

With the appropriate wiring harness, installation was a breeze on a BMW 650 GS. A monkey could do it. Now I feel safer. Works as designed.

This was the one thing that my motorcycle basics motorcycle basic safety class instructor said to do. When I ordered this I did not see the the part where it said if you have a 5 and 3/4 bucket use the universal Highness where you have to tap into your wires. I refuse to cut any wires on my bike I will not do it. I have a Honda shadow aero With the 5 and 3/4 bucket and had it all hooked up . my son managed to squeeze it all in there and get it bolted shut so it will work it's just a very tight fit. it's dark here so I haven't tried it out yet but I will timorrow. Also like others have said the wire that goes to the horn is too short so I will not hook that up. I also dint have the sensor attached yet. Im going to mount it behind my radiator grill but the nut in it is missing. The wire connector was also missing so amazon gave me a full refund . The tape is useless as you cant tape a square box in the headlight bucket. It was very difficult to squeeze it all in

This and the necessary harness (Signal Dynamics Adapter Harness 1083) are now installed on my 2009 Piaggio Fly 150 scooter. Follow the manual instructions for your particular cycle or scooter to access the headlight bulb (mine was the single H-4 type). The rest just involves plugging in the various components and positioning the small sensor light that shuts the unit off in darkness. The Piaggio has loads of room for the plugs and wiring, and a stickey pad is supplied to secure the module so it doesn't rattle around. When I am out riding, the alternating headlight really seems to get other drivers attention. Here in the Pacific Northwest we have weather and tree-shadowing conditions that often make a 2-wheeler hard to see in certain situations. I regard this as an excellent safety feature, fully recommend it, and have already ordered another for my other bike.My only caveat is that if the space behind the headlight on your particular bike/scooter is small or non-existent, you might have to get a little creative in placing the module and wiring after you get everything hooked up.Addendum 11-7-15: I now have this on every bike I ride. I can't count the number of times I have had drivers give me a second look and not pull out or make a left turn in from of me.

One of the best safety devise for motorcycle, help people in cars see you, great item.

Did not work on my motorcycle. Modulates randomly and low beam does not work at all when disabled. Tried moving sensor around. Purchased this to ride safer, returning immediately

Works as specified with the Signal Dynamics Wiring Harness. Both units were installed on a Goldwing trike following the instructions. The tough part was running the harness through the fairing area, mostly because there us limited area to work unless you remove a significant amount of the fairing cover. I was able to do it with only the storage boxes removed and using the access area around the triple tree. Tough but not impossible. Patience, persistence, manual dextarity and neosporin for minor cuts and scrapes helps.