The reason for flickering of FIDC when GAUGE and ECU connectors were mixed up was that I had connected injector wires through the USER (green) connector.
Took out the USER wire and connected injector - (green wire) and 12v (red wire) through the ECU-connector but I don't get the FIDC flickering when motor is running. I checked the continuity between injector - and ECU connector and between 12v (red wire) and ECU connector. The board fuse gets 12v, tried also with another 5A fuse. No flickering of FIDC when motor is running.
Is the board now faulty? FAV connector -> SYS functions as it should I think (THRESH and 95% light up). When i pull out IDC-connector TRESH lights up and pump is activated.
Is it possible to fix up this board somehow anymore?