Repeatedly blows fuse to dash lights and tail lights. I have replaced the multifunction switch and the 20 pin plug to the mfs.

Commonly, the multifunction switch has been known to cause similar problems

the dash lights work off the tail light fuse, if all the fuses are good, you could have a bad light switch

there could be a short somewhere in the wires

does the fuse keep blowing ?? it is also on the same line as the cigarette lighter if the fuse is blowing check that there is nothing stuck in the lighter socket that is shorting it out. Could also be a bad ground wire not makeinig contact.

Both the dash lights and headlamps, including the tail lights are fed through a fuse link under the bonnet, then the tail, dash lights are run through fuses as are the headlamps. Firstly, check the fuses electrically not visually. Use a test probe (available from your local auto parts shop, not expensive) and clip one end to a good ground on the vehicle chassis and use the pointy end to check both ends of each fuse, the test lamp should light up on BOTH ends. If it lights up on one end only, then that fuse has failed and should be replaced. If it does not light up at either end of the fuse, that circuit is without power so turn on the ignition and lights but DO NOT start the motor. Then check the fuses again. If all looks good, locate the light relays which could be under the hood in their own enclosure or plugged in under the dash and check each one for inputs and outputs. If the relay pins are numbered, you should have power to pins 85 OR 86 but not both and 30. Pins 85 and 86 are the coil connections and a power supply and ground connection to these pins should turn the relay on (you should hear a click) pin 30 is the main load supply and pin 87 is the output supply. This means that pin 87 should be active whenever the relay is turned on. power missing from pin 30, check fuses and fuse links. Power at pin 30 but not at pin 87 when the relay is on, replace the relay. Essentially, the light switch turns on the relay and the relay switches the power to the lights, one relay for dash and tail and two relays for the headlamps (high and low beam). You may find that the vehicle has two headlamp relays for each side headlamps, a high and low beam for the right side lights and the same for the left. If you have no power to one of the switching connections (85 and 86) then again check fuses and check the light switch itself.

Check your tail light fuse, on the dodge ram the dash lights and tail lights use the same fuse so if the tail light fuse blows your dash lights will go out to alert you of no tail lights.

OK there is a short in your car
take all the light bulbs out of the light that trigger the problem this break the current place one bulb in at a time checking that the fuse has not blown this will pin point where the problem is
once you find the problem you can replace the socket as it may have started to corrode check for water
once you replace the socket you should not have a problem
if you do let me know
dj_ricko_1988 at hot mail dot com

I KNOW YOU HAVE AN ELECTRICAL SHORT.WAS AN ALARM INSTALLED OR ANY OTHER TYPE OF ACCESSORY? CHECK WITH DODGE TO FIND OUT ABOUT A RECALL.IF SOMETHING WAS INSTALLED, TAKE IT BACK THERE TO STRAIGHTEN IT OUT IF NOT HAVE A AUTO TECHNICIAN CHECK IT FOR YOU.

disconnect head lights, and replace fuse. Then turn the light back on to see if it blow a fuse again. if not, plug on light in at a time. You might have a bad headlight???? then unplug that one if nothing happens. Then plug the other one in. It could also be a bad taillight bulb. I have had bad tail light bulbs. Do all of them, one at a time.

I have the same car and had the same problem, these cars are notorious for the head light switch to fail.