The cooling fan is controlled quite differently on TFs with A/C. Section 4.25 of the wiring document describes https://www.the-t-bar.com/community/downloads/download/5-electrical-diagrams/12-mgf-electrical-library-upto-2001
and the circuit diagram, if you dont have it, is here;
https://www.the-t-bar.com/community/downloads/download/5-electrical-diagrams/13-mgf-upto-2001-my-electrical-circuit-diagrams