When you place an L SD70 in Surveyor, select the ? and click on the loco.  Put some fuel and sand in it.  In Driver, Cab mode press [ to view back panel.  LMC&Hold on Isolation sw pushing up to move sw to start.  LMC&Hold start switch and pull down and hold until engine comes to idle.  Put iso sw to run.  These locos only work in TRS2006 at this time.
 
Bob