Cluster went crazy?

[EWC88]

Lastnight when leaving working out of no where everything on my dash kept flashing on and off for a good 30 seconds then stopped. What could of caused this? When I say everything on cluster I mean every thing that could light up ( blinkers, high beams, check engine, etc). Any input would be great.

 

[05singlecabHEMI]

Maybe a bad ground? Probably check that first.

 

[EWC88]

Forgot to mention I haven't touched anything for awhile. Also my one hid headlight was out and before it happen my other was out but then after the flashing happened the one headlight came back on.

Big noob where are the ground locations where they would have it?

 

[Redtruck-VA]

The cluster goes through a startup test everytime the ign is turned on, perhaps a loose ground caused the PCM to signal the cluster to startup again. I'd start at the battery and check the IPM anything amissed.