I own a 93' 400E and I just replaced the timing chain and ignition switch. I tried to start the vehicle and I finally figured out that the fuel pump was not receiving voltage. I hotwired the pumps and they work fine. I'm also trying to find the fuel relay to check it. I've double checked my ignition switch and all wires are connected. If someone can help me with some ideas I'm all ears.

Problem solved - because my battery terminal was loose proper amps was not present, causing the fuel pump not to operate. Lesson learned...........