I am going to make this a running OEM parts list:
Tweeter Sails (SEDAN/e90 only)
Includes H/K Logo:
Cover, window frame, door front left HARMAN/KARDON 51337270891
Cover, window frame, door front right HARMAN/KARDON 51337270892
No Logo - cloth behind grille to hide tweeter?:
For vehicles with HiFi speaker system WITHOUT Cover for speaker
Cover, window frame, door front left 51337258575 $30.89
Cover, window frame, door front right 51337258576 $30.89
No Logo - NO cloth behind grille, tweeter visible?:
For vehicles with HiFi speaker system with Cover for speaker
Cover, window frame, door front left 51337171201 $35.98
Cover, window frame, door front right 51337171202 $35.98
Female Plastic Connector (with male pins inside) - to make jumper for "Stereo"/Base systems
Plastic Connector 61136901731 4x Pins 61138364835
Metal Contact Socket
61136920094 (for smaller wires, use last two digits 92.
Plastic bits:
Universal socket housing MAK8, uncoded 2 POL. 61136925166 (white in picture)
Universal socket housing MAK8, uncoded 1 POL. 61136925176 (green)
2x
61130006664 (Pin Contacts including 18"wire) or Pins only
61131393723 (for attaching to your own wire)
1x
61138373583 (Universal Pin Terminal Uncoded 2 Pol)
Note: The pictures show the wire AFTER i already cut it to make the pigtail. The wire in the second pic is what remains (just to give you an idea of length). The first PN is the pins pre-crimped to the wire, the second is the pins by themselves, if you have your own wire you need to connect to.