97’ 2500 5.9 Dodge Ram Cummins

My Turn signals and rear break lights only work when hazard switch is pushed down. All in all I have no hazard lights.
- List of things I replaced are
- Multifunction switch
- Both flasher relays inside truck
- relay under dash above foot pedals
- checked grounds near headlights and cleaned up

I don’t know what I’m missing or where else to look further into. I’m not super advanced with a multimeter but i do know how they function and its purpose. Would like to get truck inspected soon so I want these problems fixed.

 

Have you checked the fuses?

 

Yes, checked fuses - none of my guages are working at all - swapped pcm and still no difference - I’m lost

 

PCM only drives the tach. The rest read directly from the various sensors.

Do any of the lights in the dash work??

 

Yes they all light up - I even just checked my driver and passenger side ground from battery to block as well - both are tight and look good. Odd problem hope I can figure this one out.

 

Do ANY of the gauges work???

 

Only guage that works but is iffy is the battery gauge

 

Download the service manual for your truck from here. Wiring diagrams are in section 8W. You want to see where the turnsignals normally draw power from, and make sure you actually have power..... I would also be investigating any fuses related to the cluster......