Blower motor resistors are generally found nearby the blower motor.
I don't know how similar a '99 and a '95 are, but I've posted detailed directions (with pictures) for replacing a '95 blower motor resistor at www.timsjeepblog.com.
In my '95 cherokee, the blower motor resistor is under the glove box. I assume it's about the same on a 1990. I posted instructions (with pictures, so at least you'll know what you're looking for) for replacing it on www.timsjeepblog.com.
I assume it's very similar to a '95 jeep cherokee. It's under the glove box. To see some pictures and instructions for replacing the blower motor resistor, go to www.timsjeepblog.com.
The blower motor is fuse 5 on the interior fuse panel
The blower motor resistor is under the glove box. There's a plastic cover over it. You remove the cover and you'll see a connector that is plugged into the resistor. You can see pictures at www.timsjeepblog.com.
I have a 95 Cherokee Country and I guess they are the same. The motor is on the firewall under the hood on the passenger side behind the washer fluid container. You will need to remove the fluid reservoir to access the bolts holding the motor in.
sounds like a defective blower module
There is a fuse that protects the HVAC (Heating, Ventilation, Air Conditioning) blower motor circuit.
blower motor bad or no power to it chech fuses blower switch blower motor
The blower motor is located in the passengers compartment near the right side of the HVAC module...............