[taibanl]

Harnesses - are an absolute must for any well installed system, most are full Plug & Play and will allow 100% reversal to stock condition:

• Technic Harness- System specific harnesses depending on the type of system you have, using all OEM connectors!

  EPS/ Logic 7 'Add-a-sub' harness & another pic
  HiFi Harness
  Hookup of [amp] with Technic Harness
  What's included?

• MusicarNW harness - Simple harness when only doing a frontstage upgrade? Does not require HU removal!
• Other options: (Metra) - For relocating radio to trunk...not sure how many use this.

If you're the adventurous type and want to tap in or make your own custom harness: DIY: Amp Wiring Guide (for HiFi and L7 systems) or Wiring Diagrams for the Members

Where is the remote wire?

e90 HiFi Upgrade - with some DIY wiring info (pg 1-3) and running wire to front doors (pg. 4)

An unrelated thread with some random useful OEM wiring parts/connectors
.