I have a new to me 1028. I have been trying to get all the issues repaired. The oil pressure light does not come on at start up. With the truck running I shift the transfer case into 4 wheel drive and the Gen 1 light gets bright and blows a fuse (accessories 20 amp). I have cleaned up the printed circuit and tested the continuity of the board with the light bulbs and all checked out. PIN #5 is common to the oil pressure light, 4 wheel drive light and Gen 1. I have looked at the wire diagrams in the TM's, but couldn't find (and trace) the wire from PIN #5. Does anyone know where this wire goes? Your help is much appreciated!!