screw on reflectors.....the only reflectors on my bike

 

Giant-*** acorn nuts with flat-head Allen screws from underneath. The license frame is a cheap, 10 dollar affair available from just about any cycle shop. I think that frame would work on a side-mount, but I've never tried it. I hacked the factory license plate bracket to make it lay flat, Then, I gave the plate and cheap frame a radius by bending them on a telephone pole. I had to cut an Allen wrench to get it to fit behind the plate for tightening.