I have a battery drain on my 1985 with all the fuses pulled.I have the FSM on PDF from Bishko and trying to trace it down on the hot at all times.The PDF copy of the power distribution leaves something to be desired .I have checked with the headlight disconnected at the hood which did not help.Does the isolation relay hot at all times?I know the power seat is hot at all times but can't see the others from the FSM.Is there a others that are hot at all times? I also did the alternator check and that was O.K. .