I was cleaning my MAF sensor last night and noticed in the wiring harness bundle that one of my connectors was undone. It is a plug that points down and looks like it goes to something mounted under the alternator. I cleaned the conectors real good and put it back together. Problem is now my car won't start. Turn the key and I get the fuel pump and the normal idiot lights on the dash then nothing. I did have the battery disconnected while i cleaned the MAF. Car is currently being charged. So what is this plug and could it be causing my issue? Also can I just disconnect? Thanks.