Steve, I'm having the same problem on my 86 Euro 500 SE I put in a new dash and now have no power to fuel pump.I bridged the 30 pole and the 87 pole with the fuel pump out and still no power. The fuel pump relay on 126 is on the left side fire wall next to the OVP not sure on you car.Mine will start and run if I hot wire the pumps directly.if you pull your relay number 30 is MB code for hot side all 30's will be hot..........

William Rogers..........