Some insisde dash lights dont work

fuses blow because of dead shorts or excess current draw
to blow a 15 amp fuse indicates a dead short
by disconnecting the rear lights , the problem is in something else you have replaced
could be a problem in the head light wiring

dashboard lamps or bulbs in cluster may be burnt or bad dimmer switch.for the stop lights, check brake switch located behind brake pedal

find the short, could be in the switch or a wire itself...and if you have a bulb out it complicates finding it even morenew fuse it, then turn things back on one at a time...should tell u where the problem is

remove wires till you find the one with problem them repair problem

did you check the dash light dimmer ! if yes the switch may be bad. check for a loose wire to dimmer switch also. good-day !

The parking and tail lights are usually on the same fuse as the dash lights so if the outside lights are working it sounds like the instrument dimmer control has failed. The electronic bits inside the control for these lights sometimes go faulty. A temporary fix is to remove the wiring plug that attaches to the back of the dimmer control and put a jumper wire across the terminals. If dash lights then work then replace dimmer control.

pull the dash light dimmer rheostat and test it, chances are it is open and is the problem, If the dimmer has power to it and the lights don't work then the dimmer switch is defective, the fuse is most likely not a problem, it would be the instrument cluster fuse, remember any fuse being blown indicates a shorted circuit.

Check the taillight fuse, too (15 amp fuse next to the 7.5A instrument panel fuse). If this fuse blows, the dash lights will go out, too. I don't know why they did that, but they did. The next step then is to find out why the taillight fuse blows. It has done this repeatedly on my mom's 2002 Century. Haven't found the short yet.

Make sure that when you check the fuses you use a test light applied to both sides of the fuse you are testing.It can be very difficult to see a fuse that is blown when the fuse is blown near the edges. PS the dash fuse is by itself and needs to be checked when the light switch is on.

As with everything else electrical check your fuses first. If you don't have a map of your fuse box just pull them out one at a time and check them.. blown ones will be easy to spot. If all the fuses are good, check the dimmer knob for your interior lights (roll it back and forth a few times) If the lights come on at one certain spot but go out again, it's the dimmer gone bad. If they don't come on at all pull the switch out and check for power with a test light. If power bad dimmer... if still no power bad headlight switch.... Hope this helps...;-)