Gang, I'm still trying to diagnose my engine dying problem on my 88 740 GLE B230F... you know, the one where if you push in the brake or hit the turn signal, the engine will die.

The power comes in from the battery through the firewall to the ECU... This much is clear.

1. DOes the ECU have anything to do with the
a. turn signals
b. brake lights
c. stereo
or, are these items stand-alone?

2. Where is the main fuse box grounded to???

3. Where do the alternator wires connect to?

4. Is the fuel pump relay supposed to engage when the brake pedal is pressed?

your answers/suggestions would be greatly appreciated.

thanks.