Stray Connector help

The connector off the throttle solenoid I found where it went and I got it hooked back up now. The last two pictures I posted I found after I reconnected the throttle solenoid connector. When I was doing the plugs/wires/cap/rotors/oil change yesterday I found the last connector just hanging back by the oil filter housing. Its got enough length to get to the firewall and seems like it would go to something there. I just haven't found what too yet.