Here's my reverse lights idea, only installed on a 66 Bug. I have also seen people use these little lights, with back tinted lenses in red, as secondary brake lights. Lets face it. These old VW's don't have much going on in the back with regard to lights. And what is back there usually has bad grounding and therefore only seems to work about 60% of the time. For example, the bus has secondary ground wires for the tail lights already, as opposed to being grounded through the mounting to the car of the metal frames light buckets themselves. Good ground is a good thing.