How do you replace resistor in Kenworth T600?

To replace the resistor in a Kenworth T600, first, ensure the vehicle is powered off and disconnect the battery to avoid any electrical hazards. Locate the resistor, which is typically found near the blower motor or in the HVAC system, and remove any necessary panels for access. Disconnect the wiring harness from the old resistor, unscrew it from its mounting, and then install the new resistor by reversing the removal steps. Finally, reconnect the battery and test the system to ensure proper function.