If someone is clever, might be able to find out what the flasher is. Although $12 with free shipping is pretty reasonable. Way better than some hacked up resistor mod, or a way expensive black box that you then have to mount someplace!
1. Remove the 4 allen head bolts that hold the headlight in. Be carefull, it may or may not fall when the last one is pulled.
2. remove stock flasher and install this one. Boom! No wires to cut, boxes to attach someplace.
top right black box in this pic: