its under dash on left side of steering column theres a rod that runs from your blinker switch when you pull on it that pushes down this switch on your column It may be difficult to remove without lowering column. I unplugged old switch, on '89, pluggged in new switch, set new switch on dim, and wired switch to column so now only have dim lights but avoided paying a lot to a garage to replace switch.
The headlight switch should be easily removed from the dash. There are two connectors on the back side of the switch (one for the headlights and one for the dimmer). Simply unpug the connectors and plug in the new switch.
Typically this is a failure of the headlight switch assembly. See the question about how to replace the headlight switch in a 1991 Cherokee for the answer of how to accomplish.
1991 Corsica its under the trottle body
You may have to replace the headlight switch since your tail lights are tied into the same switch.
I need to know how to install a headlight swith in a 1991 ford ranger xlt
Replace your heater selector switch
On the Transmission under the shift cable. Drivers side on top.
Replace the headlight switch. Be sure to use a qualitypart.
how do you replace a ignitionswitch tumbler 1991 buick skylark
You remove grill to remove and replace the headlights.
replace ign sw on 1991 volvo 240
if its a manual transmission its attached to the clutch pedal housing if its an automatic its the shifter