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That is the antenna connection for the alarm/immobilizer module for the remotes. You need that. It plugs into the module about an inch to the left in your picture, just to the outside of the blue connector.
The "antenna" is just a piece of coax (some flavor of RG174) run with the harness with the shield stripped away for the appropriate length (a bit over 9" for 1/4 wave) which acts as antenna. Your remote range will be greatly reduced if that is not connected. Range was obviously not a huge consideration, so they didn't spend much/any time on antenna design. This is a very common way of running the remote antennas. The M531 module used with the earlier two-button remotes also has a coax run in the harness, but they did not bother using an RF connector, and the signal and shield wires are incorporated in the main blue connector.
There, more than you wanted to know!
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'03 S, manual, 18" Carrera wheels, PSM, PSE, Litronic, 996 Cluster, +
Last edited by Qmulus; 01-20-2017 at 09:59 AM.
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