I know I've seen my seat belt light come on when I start the car, but I think if you ever unhook the chime box under the dash, it kills the light too. The low fuel light was an option and for that you have to buy the module/bulb assembly that plugs into the back of the cluster, mine didn't come with one, but I bought it off of ebay. As far as the washer light, I wasn't even aware there was such a light on the dash, but there probably is.