Hey guys, i need your professional help on wiring the stock navigation. On the service manual, the wiring diagram shows a circular dashed line wrapped around several wires and is attached to a shielding wire. Do you guys have any idea what is used for this shielding? Is there any alternative ways of wiring this that you guys suggest? The picture of the service manual is attached. Thanks for your help!

 

you can use foil, wrap the bundle of wires with the foil and attach a wire to the foil, and ground where indicated.

typically the use either a very fine wire braid like material in conjunction with foil, the idea is to get 100% coverage.

 

Thanks a lot! =]