The fan control resistor block needs to be replaced. It's located under the passengers side of the dash, near the blower motor. It's a simple job, consisting of a few screws and a wire connector.
Your blower motor is getting ready to fail, it is usually gradual. I have replaced 2 on my 200 Kia Sportage and in both cases the low sppeds failed first. This may also require the relay be replaced as when it finally fails it can take the relay out.
First guess would be a bad ignition switch.
it has a dead raccoon stuck in it
i guess the first question is --does the 1998 have the power option on dash. If so then you should be able to just plug them up, but possibly Kia changed the wiring plug between the model years,then you will need a schematic.
blower motor resistor is burned out
The vacuum seals on your front hubs are shot (no longer sealing). Put on a pair of Warn Standard manual twist locking hubs and be done with it. Never fail and work every time.
Blower motor resistor...around $25 on eBay
Multi functions switch is junk
A possible reason that only one high-beam will work is that the malfunctioning bulb is burnt out.
There is a vacuum pipe system used to lock the front hubs. The t pieces in this system are platic, and break after a few years. This stops the hub from locking - hence only rear wheel drive despite what the light says.
check fuse panel.
there is a disable button on driver door so other windows wont work. Try clicking it in the other direction.