96 C220 Won't Start

[MBCLASSICS]

Hi Everone,
My C220 won't start. Previously it would not start once in a while or die out while driving. I replaced the fuel pump and relay and it still did the same thing. Now it won't start at all. I hear the relay click but the pump does not even come on at all even while cranking.

Anyone know what can be causing this? Shouldn't the pump go on for a few seconds regardless of any other problem or is it computer controlled?

Thanks