Q: How to remove and install the control assembly, speed switch, temperature control, and blend-control switch in a Nissan Pathfinder's instrument panel?A: To remove the A/C switch from the instrument panel, unscrew the four screws retaining it, unplug the electrical connectors and detach the control cables. To remove the speed switch, temperature control, and blend-control switch, pull the knob off from the front side and depress the plastic tabs on the back of the switch to release it from the control panel. Installation is the reverse of the removal procedure.