While researching LED lights I have learned they need to be mounted so they emit light more or less parallel with the road surface as they are restricted to about 10 degrees of maximum viewability. Found this out when I looked at LEDs mounted on truck cap at 30 degree angle to the road surface. You don't get the full effect till you get on a ladder and look at them from a higher position. Thusly I am not rigging a angle adaptor to mount these to where they and aimed slightly down toward the road. I talked to one of the lighting companies and they gave me the 10% angle figure.