I am upgrading my thermostat from a trane weathertron(mercury tube) to a digital Honeywell focusPRO th5000 series, and need a wiring diagram for the 2 different thermostats. Is there anyway to get them?

Your Honeywell should have come with one. Try this

http://customer.honeywell.com/techli.../69-1922ES.pdf

And this

http://customer.honeywell.com/techli...0s/69-2026.pdf

No info available on the Trane stat