Tired of the fuel level light coming on at half a tank. New sender already installed and same behavior, starts warning me I'm low on fuel at half a tank. So, looking through the repair manual, I see that the fuel tank sender uses ground G186 in the right hand side of the trunk. I removed the carpet and went looking for it. Turns out to be a major ground point. G186 is: Motronic ML4.1 Ignition/Injection, Side markers, turn signals, misc dome lamps, instrument fuel transmitter, Door open warning lamps, rear defog, trunk opening, fuel lid popper, Alarm, Radio/telephone, and suspension in the S. Of course all these system work in my car except the fuel light, so not likely a problem there, but I went in and cleaned and tightened the ground point anyway. Of course the light is still on. Anyway, thought I would photograph this ground point and point out how important this one is. I think I will look next at the cluster connection. It is a PPL-BLK wire B3 (third one from right in the upper right hand connector at the cluster and check the cluster grounds too.
82.9 KB Views: 843