It's miles an antique rheem rgaa-100c furnace, at the vintage motor the wires turned into: white, brown, red, black and blue. On the new motor it has brown, brown/white, black, purple, white, and blue. I don't know the way to wire it lower back. They do not make the old motor anymore, this motor changed into the alternative. Should you please help. The final wires are for choosing the motor speed (blk, blue, pink), so you're going to ought to discern out which velocity you need to be the use of. If you can recall which colour twine changed into related to the red wire in the junction field, that should be the identical colour cord to hook lower back up. Typically the blower is administered at low pace whilst in heating mode, however this is no guarantee that your device became installation that way.