i have a 99 sportage. everytime i hit a bump the dash lights and park lights go off. and the radio goes off at the sametime. and the temp gauge goes up. what is the problem. someone told me it might be dimmer switch.
a bad dimmer causes this problem because the variable resistor goes bad in them. i bypassed the dimmer on my dash lights and i haven't had the problem since. personally i think dimming the dash lights is pointless because they aren't very bright in the first place but i'm 100% sure that that's the problem. you'll either want bypass the dimmer or buy a new one and put it in.
North Carolina Kia
The tail lights are not run through the dash light dimmer circuit so you either have two problems or the Headlight/parking light switch and/or the plug in connector that connects to that switch is probably bad. The headlight switch(and plug) controls both the tail lights and dash lights.