If I could suggest... most of your year's Voyage floorplans came with two possible engine/chassis configurations (Ford 6.8 Triton and Workhorse 8.1) and without knowing which you have it's hard to help. The dash and switches may differ and are part of the chassis documentation, not the Winnebago.
You might want to identify which you have, and perhaps ask your question in the appropriate sub-forum in the Chassis Club section... there are groups for both Ford and Workhorse. They have links to many docs specific to their chassis.
Ed & Joie
2004 Vectra 40KD
Freightliner Chassis and Cummins ISC