i recently bourt an xr6t ute and the heater was nevaer getting warm, do they have a heater tap/ switch under the bonnet or thermo in the dash?

also recently removed the crossover to change plugs found broken intercooler rubbers n dealin with other ignion problems after i rectified it in anougher post, but after this i canot get my demister to blow on the windscreen anyhelp would be orsome, cheers