well, I will take a stab at this:
The tire tele is a wire that goes to the " Tire low pressure" indicator, which requires the annunciator unit for the tow vehicle.
The refrigerator wire is to run the rerigerator on DC while traveling.
I think you could tie this to the "battery Charge" conductor on the seven way connector.
As a matter of fact, the "battery charge" conductor should provide 12 volts to the battery and hence to the refrigerator.
Probably dont need the refrigerator line.
Can you send picture of 9 wire connector?