Have you gone to Spartan for your Wiring Diagrams? If you give them your VIN Number they will supply you with a PDF file of the chassis wiring. Don't bother trying to talk to Gulf Stream as they are useless for our vintage coaches. I have the 8344 so I am not sure my wiring diagrams would help. This will not show any modifications that Gulf Stream made to the system. Have you checked the Battery Control Center (BCC), this is where GS made major modifications to the wiring and if one of the latching relays has failed in the open position, you will not have power to the chassis systems with few exceptions.
1995 Gulf Stream 34' Scenic Cruiser Diesel Pusher 8344WFD. Cummins 12 Valve 230 HP, Allison MD3060 World Tec II.
2019 Jeep Cherokee TrailHawk Elite,
Road Master Sterling All-Terrain Tow Bar,
Air Force One Brake System