Wires on existing system that are not on the Nest

[RoyP]

I have a Trane whole house AC system that is about 7 years old. My problem is there are several wires on the original plate that do not map to those on the Nest 4th generation.  The wires I have on my original system are:

ODT - a red wire and a white wire

W1 - grey wire

G - green wire

Y1 - yellow wire

O - orange wire

B/C - blue wire

RH - red and blue wire

RC - blue wire that is connected to RH as a jumper

The wires I don't know what to connect to are the ODT, O, B/C, RH and RC wires

I would send a picture of my setup, but you don't allow pictures to be uploaded. 

I look forward to installing the new thermostat once I know the correct wiring.  

[GBD]

the ODT wire on the Trane system is for an outdoor thermostat which the nest doesn't use as it get's the outside temperature from an online weather service, O (reversing valve) would go to O/B on the nest thermostat, B/C (Common wire) would go to C on the nest. RH & RC would go to their respective terminals on the nest without the jumper (nest does this internally)