While we are on the subject of TR7 tail lights, here is a little trick to make them look brand new. Wash the lenses very well with dish soap and a fingernail scrub brush, tooth brush. etc. Allow them to dry completely. Give them several light coats of clear acrylic spray paint on both sides. Do one side at a time and apply the coats one after another as soon as the previous coat starts to set up. When you are done, they will look brand new. The lenses are made from acrylic plastic, and the clear fills in all little pits in the lenses that gave the lens a cloudy appearance and scattered the light passing thru them.