E46 Coupe Sat Nav Install
Saturday 30th October 06  Sat Nav Retrofit
 

Words & Photos: Ken Devitt
 

Moving towards the back of the car again - this is the hole that the loom needs to pass through. You'll also see the grounding point you'll need to use.
The aerial connector from the retrofit loom needs to be connected to the aerial booster. This is behind the c pillar trim. Remove the old aerial connection, and tape it down. away from the booster.

The GPS antenna needs to be secured under the parcel shelf. The one I used wasn't a BMW part and as such didn't clip into the OEM mounting point. The BMW antenna clips onto a mounting point about halfway across the parcel shelf. The cable needs to be routed back into the boot.
The navigation computer, and BM54 radio tuner, should then be plugged into the loom in the boot. The cable from the GPS antenna should also be plugged into the navigation computer. They can then be fixed to the CD changer mounting bracket.

Once you're happy everything is plugged together, stick the passenger seat back in. Once that's plugged back in, its safe to connect the battery back up and see if the system is working. If the system doesn't working, recheck all wiring. Otherwise you should see the screen on the right.

The final step is to simply replace all the trim you have removed and enjoy your install!
 
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