The mileage on my cluster stopped counting and I had a finicky fuel gauge so I thought it was the cluster and replaced it and still having the same issues, any ideas or suggestions?

 

I fixed my cluster yesterday
I just did what this guy said in the utube video for my cluster and it work .Its a bad ground.
I was ready to buy a cluster myself then watch this video on utube and figured i do this first
I ended up extended I believe A8wire its black and white wire it in the cluster harness
and it work awesome mo mare flicking.I also cleaned up the grounds on the frame of the truck and theres a couple more
click on the link below