I've tested the r-lb off of the ignition switch in start and it shows hot. However when testing at the starter motor relay the r-lb wire is not hot (thus not turning over). However I can hotwire it across and it runs. So it is mostlikely a short in that circuit. The wire diagram shows a "start interlock back up lamp switch" I presume connected to the trans somehow to prevent starting in gear? Could it be shorted? Where do I look? Thanks for the help.