Help Locating Stock Water Temp Sending Unit Wire!

Well, the title pretty much says it all. I need help finding the wire that goes to the STOCK water temperature sending unit. I thought it came out of the fuel rail harness and had that little rubber right angle cap on it.. I may have changed it before but cant remember. I wanted to see if someone could snap a picture OR tell me what the color of the wire is so I can try to find it. I have one or 2 wire that I had isolated, but not too sure of where they go.

Thanks
RC