After hoses, I now face the numerous unconnected connectors on my S5 N/A. I understand that some of them are supposed to be unconnected--such as the green 1-pin test connector and the yellow 2-pin fuel test connector--but there are others that I have no idea.

Here are two that I just came across. Both of them have yellow sockets. Should they be connected to something?

 

Kinda hard to tell imho. Usually if someone told me *How many wires are in the connector and how many sockets are in the connector * then state what the colors of all the wires are in that plug*, even I could look in the free online wiring for a series five and find out what that plug does in life.

Others with a series five might be able to tell you from just looking.