I want to know how to connect low voltage transfomer for White -Rodgers 1F80-261 thermostat to furnace blower motor (Goodman GMP075-3 Furnace) control on White-Rodgers 50T35-730 control board. Thanks.

Sung

Instruction sheet for your thermostat

http://www.white-rodgers.com/wrdhom/pdfs/instruction_sheets/0037-6288.pdf

Your number 50T35-730 NO longer available

This takes its place

Suggested Replacement:50T35-743


http://www.white-rodgers.com/wrdhom/pdfs/instruction_sheets/0037-6533.pdf

Note all the circuit boards have the thermostat wires located and lettered. They just match up with the letters on the thermostat.

R TO R

G TO G

W TO W etc.

If you still do not understand then I suggest you call a qualified service person for a ON SITE service call to fix your problem since I cannot see exactly what you have from here. Naturally make sure you read all the directions that came with the new parts.