Bmw 525I does not start
Please help I have a 525I E34 Auto. The car was running fine untill yesterday. I went to the shop and after coming back got into the car and started it like normal. It fired up straight away like always and then after a few seconds it just died I tried starting it but to no avail. It cranks over but will not start. I had it towed back home and checked the Fuse no23 it is fine the relay in the e-box also seems fine as i did swop it out and stil nothing. I can not hear the petrol pump buzzing as it usually would do. I checked the plug at the back going into the pump and found there is no power goming to the pump. There is petrol in the car. Can I maybe give direct power to the pump from the battery to check. The problem is I dont know which pins is for positive and which is ground. There are 5 wires going to the 5 pins. Please help ??