I would advise sourcing a replacement from a smashed car, if it got that wet the circuit board will be corroding and eventually the voltage/amp tolerances will not be met and then either the ECU will fail or the car will at least start running badly. See this a lot in trashed laptops, and had it on a 944 Turbo when drainage holes blocked up and water ran down the harness and into the ECU box. So even a Porsche can leak, just like a Morgan!
