climate control not working

[mossyoaktj]

ok so this is another electrical problem ive been having wiht the tj. the switch controlling the blower does not work we installed a new switch and still nothin. dad hard wired the blower and the blower works fine. im not sure if the heat switch is the same way seeing how it never blows out hot heat, so maybe that whole climate control is jacked or i have a bad heater core. need ideas on how to fix this. i was thinking about buying a whole dash harness off of ebay and installing along wiht a new heater core and seeing what happened