I see this question asked several times but no answer. Please help me with the wiring. I need the conversion chart on these thermostats from Trane Weathertron to the Honeywell RTH7400D.

I have 5 wires with no match. Trane letters are O, X-2, T, B and W.

Honeywell open spaces are C, G, Y, O-B, RC, AU, E and L.

Help!

Thank you