What is the purpose of a speed bump?
Acrylics and Mylar. There are lots of materials made with a shiny coating. Think of all of those shiny mylar balloons, or the shiny plastic parts of toys. In my area, there are a couple of specialty plastics stores. One of the more well know is called TAP Plastic, in San Jose and Mountain View. Just check your local telephone directory for Plastics, Retail.
the relay is on the fritz and you need to take it to a Johnson dealer shop it is not good to have that alarm going off because you will not know if you have a real problem .