In advance sorry for my bad english.
I have just notice that I have a wiring plug disconnected in the engine compartment in my 1995 Mondeo 1.8TD.
I have tried to find a place to plug and nothing. I have gone to the Haynes Repair Manual it could be to the "fuel heater multi plug" (page 2.12), but my car doesn't have the fuel heater.
I tried to find in the forum a similar situation and found a lot of unplugged wires, but not the one that I have.
It can be disconnected since the car was new, because only found it because I have a speedo problem and I was trying to find the vehicle speed sensor cable. I still don't know were the speed sensor is, according to haynes manual it appears to be in a region under the battery, but I read posts saying over the gear box (seems more logical), but I didn't find images.
Photos of the plug