I am recent owner of 2016 420R and the other night while driving my dash gauges and switches all go dark for a couple of minutes and did it several more times on that drive for various duration. At my destination, I get out with car still running with headlights still on and notice that my tail lights are also off (dash is dark too). Within a minute or two they are back on. I don't have a wiring diagram, but I have seen a description of the fuse block and it doesn't appear that the dash and tail lights share a fuse. Any ideas? Thanks