2000 bmw cranks but wont start?

[waleedakhter]

all of a sudden my bmw 323i wldnt start and i took to a local mechanic and he cldnt figure what the problem was he checked all fuel sensors everything and had to go to a dealer and they claimed that it was some wiring tht connects with the fuel pump so they charged me 500 dollars just to replace some wiring and towing comes out to 700 total has this ever happened to anyone else

 

[kweezy]

nope but i just got my bmw fixed not ppl are telling me that it could be the part that was replaced