12v to ground on cluster

[Matthew89]

Hey there currently wiring in a different cluster into my car (s15 Silvia cluster into s14) the first 2 wires I connected up were power and ground for the cluster and it initially lit up the warning lights then they went away and wouldn’t come back, I checked my ground pin n cluster and it has 12v, even with no ground wire connected. I assume it has to be something to do with the circuit board, did check all fuses tho., did have all my clusters wires stripped ready to splice together and they were probably touching each other, dunno if I fryer anything or something.
Am a bit of a novice so appreciate any help cheers

 

[brianmoooore]

I checked my ground pin n cluster and it has 12v, even with no ground wire connected.

I would expect to find 12V on the ground pin with no ground wire connected, if measured with a test meter . If it's still 12V with the ground wire connected, then the other end of the ground wire isn't connected to ground.

 

[Matthew89]

I would expect to find 12V on the ground pin with no ground wire connected, if measured with a test meter . If it's still 12V with the ground wire connected, then the other end of the ground wire isn't connected to ground.

Cheers Brian will run a new ground wire to test