Help! Problem after changing wire harness
 

I had a busy Saturday changing the wiring harness on my 95 E320 Wagon. The car ran really well afterwards and I used it on Saturday afternoon and Sunday. This morning just as I was trying to go to work, the car started then died after less than a second. It can crank just fine so it is not a battery. It just does not want to start.

I know this can be quite a wide range of issues especially after changing the wiring harness. But it seems strange that it ran fine all weekend and chose Monday morning to give me problems. I will be rushing home at my lunch break to try to look over the car and especially check the connections of the harness. I wanted to see if there could be any additional things I could try. Maybe disconnect the battery to reset the computer? I appreciate any help!

Probably not wire harness
 

Looks like the problem is not related to the wiring harness (I hope). After looking over all of the connections, everything looked pretty good. I do suspect a fuel problem, though. You would think after trying to crank the engine for 5-10 seconds you should smell unburned gas out the tailpipe, but no, it is very weak. Could I suspect a fuel pump or something related? Please help! I have no car and I'm using my wife's car right now.