Speedometer and instrument cluster lights

[REBELLE 300]

Hey guys need some help whit my dash lighting I have no lights the map light switched bulb works but no instrument cluster light like the speedo , the clock and some other. the green cold light works. i changed the dimmer switch module I change the fuse under for instruments my next speed is to change the bulbs but that's a bigger job so is there any other diagnostic I can make or something else I should check before I remove the hole instrument cluster to try changing the bulbs thanks for all the info you guys can provide

Antoine

 

[detmatt]

I would’ve put money on the dimmer being the issue, are you sure the one you put in is good?

 

[REBELLE 300]

I would’ve put money on the dimmer being the issue, are you sure the one you put in is good?

yes it's new

 

[Devinism]

yes it's new

By saying "dimmer module" are you referring to the headlight switch? If so, get out your power test lamp and check to see if you have power to terminal "B2" on the headlight switch. It SHOULD be hot at all times.

 

[REBELLE 300]

By saying "dimmer module" are you referring to the headlight switch? If so, get out your power test lamp and check to see if you have power to terminal "B2" on the headlight switch. It SHOULD be hot at all times.

I just check B2 and I have juice so I guess it’s the bulbs ? Or the bulbs socket? Right

 

[Devinism]

I just check B2 and I have juice so I guess it’s the bulbs ? Or the bulbs socket? Right

On most MoPars it leaves the headlight switch on the terminal marked "I" (instruments), almost always an orange wire. Follow that through your harness to the cluster. It may even have a factory splice in your harness somewhere. Take a good look at your wiring diagram to be sure.

 

[bigmoparjeff]

Did they ever work since you have owned the car?

It's unusual for all the bulbs to be burned out, unless the voltage regulator failed at some point in the past and fried all the bulbs by spiking up to 20 volts or so. I have seen this happen a few times over the years.

Jeff

 

[Ross Wooldridge]

Keep in mind that if the instrument lights go out, it's a cue that the tail lights fuse may be blown. This is by design.