97tbird
09-24-2014, 05:53 PM
Ok I installed my Alpine 9887 and it works as it should.....I used the VW harness and put the appropriate pin in for the antenna, and switched the red/yellow wires. My main question is there are 3 plugs that came off the factory tape deck, the two I used in the VW harness. The 3rd I have no idea what it is for, I have the non-bose system. What is that plug for, and do people just leave it not connected? Thanks