The car receiving the swap is a b8 A4, not allroad so the wiring may be a little different for you but same premise. So far I have remove the trunk portion from the S4 harness and add in the hatch wiring from the A4 harness. Also the subwoofer and rear b&o speakers are in a different location. The wiring going to the sunroof controls need to be changed as well for the extra wiring for the power sun shade. I was also under the impression that the antennas are different but I won't know exactly what I have to change until I get both harnesses out and next to eachother. I will definitely document all wiring changes I have to make to the harnesses.
My winning bid on the S4 was $6,000 and paid just under $7300 after copart and broker fees.
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