You'll tend to find many of the E vans have somewhat of a common wiring scheme, within a few model years anyway. I alternate between an EVTM from 1997 and 2000 myself---they're quite similar.

In another thread I posted this link to an EVTM cheap on eBay---might want to consider one for yourself too: 2000 Ford ECONOLINE VAN Wiring Electrical Diagram Service Shop Repair Manual EWD | eBay

One handy thing to have around!