The colors are red, orange, yellow, blue, black, white and green. The options on the back of my LUX TX9000b are RC RH B W G O Y. IT seems most of these match up but with just one B on the back is it Black or Blue what goes to RC RH. I read red would go there but that leaves me with the extra B word wire.

RC to RH is usually jumpered. Try this for more help https://www.askmehelpdesk.com/electrical-lighting/hampton-bay-replaced-burned-out-reciever-fan-still-not-working-551892.html?eid=162092#post2698846



Second post talks about wiring colors

Red would be to the RH side and they are jumpered. I have blue as the extra wire. Anybody? Does this sound right?

Blue from the furnace or coming from the stat? I think I gave you the wrong link before, try this on. https://www.askmehelpdesk.com/heating-air-conditioning/heating-cooling-maintenance-repair-troubleshooting-faq-northerheat-58313.html post2 tells about wiring