Headlight wiring question

[gasIdaho]

I have an 05' EC300 with the 2k2 ignition. Looks like the wires plugged into the headlight bulb socket are yellow and blue? There is another pair of wires taped to bundle that are plugged together at the end and taped up. They seem(I'm color blind) to be the same colors What are these for?

Also...
The metal connection posts are broken on the plastic bulb socket. Do you know if I can get this specific part. The fiche is unclear whether this is a seperate part or connected to the wiring.