There are the Skene Design Photon Blasters, including the alert feature. I had them on my S10, mounted to the crash bars, but had the mounts for the S10 front fender from the original package. Everything works great and is fully functional. Leads were cut to fit my bike, you may need to cut/extend to suit your install.
Manufacturer details at http://www.lights.skenedesign.com/PB_Features.shtml
$90 shipped to the continental US.
Manufacturer details at http://www.lights.skenedesign.com/PB_Features.shtml
$90 shipped to the continental US.