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Possible bad contacts in bulb holder or ripped copper dash contact where bulb holder screws in also check for bad solder joints in cluster or contact in harness plugs for cluster//////do a ecm self test (a) just turn the key to the on position all dash lights including check engine should be on then go off except for oil battery/charging if you see your check engine abs at first then they go off this is normal and ok if not look for bad connection coming into the cab from the firewall harness bus connector this comes from the ecm
If u installed a new radio that's your problem. The back of the radio harness that connects to the vehicles wire harness, look for the two orange wires, one is orange with a white stripe. They should read dimmer in small font on the wire. Simply connect the wires completing the circuit.
I would check the fuses first. As far as the dash, if the fuse is good, you might want to observe the wiring harness and check for a bad wire. Check around the fuse housing to the dash. As far as the tail lights, if the bulbs and fuse are good, check the wiring harness. Check carefully around the bulb sockets. If it checks out, go ahead and check the rest of the wires. You will need a voltage meter to check for current.
Did you try adjusting the dimmer for your dash lights? Did it feel different - like the knob was no longer connected?? If so, try pressing the knob to re-align it up to the threading to properly seat it. Then try turning it all the way to the right, to the brightest setting. Or try turning the other way if there is still no illumination. Make sure you have the key in the ignition and turned on to the same location where your radio, wipers, and all other accessories work (test to make sure they are working before trying the dash lights). And of course, you need to be out of bright sunlight and in an area where you can clearly see when the dash lights come on, even in the event that they come on very, very dim.
So if this all failed, I hate to say it but it means you gotta take apart your dash which usually means numerous other parts that may overlap. Find a good diagram or step-by-step instructions for your particular model. Then it will be a matter of checking the bulb(s) and making sure any of the wires did not become disconnected or damaged...
Good luck. Taking apart your dash to get behind it cant be any more difficult with your Dodge than it was when I had to do it to a Toyota a couple months ago... I had to remove the console between the front seats to remove the auto shifter assembly that overlapped with the bottom section of the dash...
alot of time and effort all for one little bulb replacement.
trying to do the same on my 01. ready to change the bulb but can't find it anywhere. anyhow, here's how you do it:
remove the dash by taking out 2 screws behind the ashtray and 2 above the instrument cluster begin prying off the dash from the ashtray up, when you reach the heater vents stop. next take a flat head screwdriver and pry off the dash from the left side with the door open. work left to right till you reach the heater vents and it'll come right off. you don't necessarily have to unplug any of the electric connectors if you don't want to, but you;ll have to reach around the dash while working. all you need to do now is remove the heater control unit via the 4 screws around it, then unplug the electric harnesses from the back of it. make sure you remember which goes where. the bulbs are the 3 white (or is it 2 white and 1 grey) circles on the back of the control unit. just turn them with a flathead screwdriver and turn it over and give it a little bump to get 'em to fall out (or grab 'em with a needle nose pliers if necessary). anyhow, that's how it's done, question is, where do ya find the bulbs?
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