With the KGWorks cluster I received, the seller included a UK-spec NA cluster with working oil pressure gauge.

First things first. I thought it was from a NA8 with the dummy gauge , so I tested it on my car as it was. At first, before actually starting the engine, the oil gauge showed full pressure. Immidiately after I started it, it dropped to zero. Is there any chance I damaged it?

My second question. What is it required to make it to actually work in my car?