i just put my rebuilt motor in my truck, its a 4.6 and the wire that goes to the maf theres another plug with what looks like a single pin connector, can some one look on there truck and tell where it goes to?

 

I don't have a 4.6 but when chasing wire connections, I just hold the plug out and kinda walk it in a circular pattern to find where it connect to. If its tied into a wiring harness that is stationary, just grab the end of the plug and start walking it around, when I put my 5.4 back together, I had the same issue with a plug next to my MAF and found the connection with this method, went toward the front of the TB area about 6 inches or so from the MAF.