2015 LML, Last night went into store, when I can back got in truck I heard a relay clicking either behind cluster or engine compartment with the key out. went to start and dash lights and gauges going on and off with the clicking of the relay. Started ok, I was only a few mile from the house so I drove it home about a mile down the road it stopped and dash lights and gauges came back. No problems all day today. Any Ideas what might be going on?