" things to check first as Ivenlinaric says check to see if the hour meter is working if not check the plugs to the service panels the wiring is really tight to them and ive had lots of problems with the plugs pulling out I usually remove the larger plug from its holder in the service panel and use a tiewrap to hold it together. The second thing remove the handle with the ignition switch in it and check the wiring hasn't been trapped in manufacture ive come across lots of the newer wav,s with trapped damaged wiring to the switch its a really tight fit in there