How do you install a headlight switch in the dash on a 91 Jeep Cherokee?

Oh this one is a lot of fun.

Remove the ashtray in the lower dash valence and a screw that is hidden behind there. Remove the screws across the top of the lower dash valence. Remove the screws underneath at each end of the lower dash valence. Drop the valence down and you may be able to configure a mirror and light so that you can actually see the headlight switch mounted in the dash panel. What you would be looking for is a small springloaded button which is on the headlight switch. It is sometimes nearly impossible to find or reach. There is no way to describe this well in words. Best bet would be to visit a junkyard to see one first hand.

But the trick is that you have to push the button and pull the light switch stem out of the switch assembly from the front. Once you remove the stem, you will notice that the cap that remains in the panel is slotted for using a scredriver to release the switch from the panel mounting.

It will push out backward and you can then pull the electrical connectors.

There is a consideration for the model year. Not all years of the switches are the same. Either get an exactly 1991 switch from a junkyard or check with a dealership manual to get the range of model years that use the same switch as your 1991. Not only are electrical connections different from year to year but the way the circuit works for the dimmer is different among other things. If your 1991 has a factory alarm system, then you need to consider that too when replacing the switch. Alarm model switches may be different from standard switches.

This is about a 1 hour job for an average mechanic IF you can pretty quickly find that secret button to release the headlight switch stem.