I spent part of the day helping a fellow user on Rennlist work on his 951 the other day and only had a few minutes to fettle my own 944. So, not much time for diving into something deep. As such, I spent 10 minutes cleaning the two major grounding points on the 944. The top image shows the rear grounding point. The bottom image, the grounding point in the engine compartment on the driver's side frame rail. Now they are all shiny and my gas gauge does not flicker around like it used to.