Quote Originally Posted by iamshayan View Post
So yeah. Im trying to do this rn. Have the car apart. Have all the bits except for the keys. It seems like the AliExpress harness has a single wire to the front doors and 3 wires to each rear door. Do you think the antennas go in the rear doors for sedans? Doesn't make sense in my head..... Also I'm pretty sure I need 4 antennas for a Sedan (2 doors, centre, and trunk). Also just retrofitted mmi 3g+ and homelink FWIW. May post some write-ups / pictures eventually.

EDIT UPDATE. - Fist of all should have mentioned B8 S4

Second of all:
According to FSM left Access / Start Authorization Antenna is located in the left rear door.

No mention of anything in the right door. Just trunk and center console

Perhaps the Ali harness has both depending on LHD RHD? Or maybe I need 4.
The Ali harness uses 4, but not being a oem harness not sure why it's different but the car only needs 3 according to ELSA, I plan to connect all 4 using the harness. I'm sure more antennas are better.

Yes the oem.placement is in the rear door but you can mount it in the front door if you want assuming the harness reaches prettt sure it does. Proper placement would be trunk, both front doors and center console.

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