Hi all, just wanting to know how can I hook up my aux fan so it always runs with aircond on, at the moment it only runs at certain temperatures when the aircond is on. My problem is the aircond works great while driving around but trips on overheat while sitting in traffic , so my plan is to keep fan on at all times while AC is on

Your talking about the fan on the AC condenser unit right? Obvious way would be find a wire that turns the AC compressor on and splice into that to a relay that then bypass the existing wiring to the fan and run it from the relay