I installed these
http://cgi.ebay.com/ebaymotors/1-85-...cmdZViewItemon LED's on my lower light, which is the running and brake light. For installation you have to drill hole in housing for the wires, shave a little off the sides of the screw post for clearance. For mounting I used double sided 3M foam tape. These LED have three modes "RUNNING LIGHTS... All LED’s are on at medium intensity. STROBING BRAKE LIGHTS... All LED’s strobe for 2 seconds and remain on at high intensity as long as brakes are applied to assure visibility and safety. TURN SIGNALS... All LED's turn on at high intensity." I connected my turn signal from my top light, which was turn only to the "TURN SIGNAL"...Now I have two lights for turning, LED running and LED strobing brake lights, and the brightness looks good. The quality of the LED product seems good, potting on both side of the PCB.