instrument lamp power and ground

Where the instrument lights ground on the circuit board I ran ground wires everything seemed good on the bench now in the car only a few lights work and very weak plus my ground wires I made I run to my dash mounting bolt and it's showing power like a short. ....is it chasing a ground? It will actually pulse and get brighter when I turn the hazard switch on

I hope you did not hook the ground to the ammeter? (Big RED and big BLACK, neither are ground) You post a photo of where you hooked it?

Does it get brighter with the hazard, when grounded with the extra wire?

Finally if the cluster is "hanging out" IE for testing it MUST be grounded. The mounting screws are the only OEM ground