Combiproz.. Eliminate current eaters

Hello

as I have already written above is now my power eater found and wants to go to repair the station wagon.
Can someone tell me on which plug(secure 28) on the instrument cluster of this combiproz.. stuck and where I must look.
I think this can be circled on which corner I find the devil, especially since someone has been dealing with it the way I and it has been healed.
Would be supi something helpful to learn because I want to help another patient in the same breath.

greetings