I have figured out the 20 pin connector with the exception of 1 wire: It is dark green & labeled PLT. However there is another seperate connection coming into the unit below the 20 pin connector. It is a 6 pin connector with 3 wires coming out: dark green, light green, & purple. I am getting ready to hook up a JVC KD-R900 & the SWI-JACK steering wheel control. I have the majority of the JVC'* wires soldered to the harness already. But now I'm stuck... What does PLT stand for on the 20 pin connector & what are the dark green, light green, & purple wires in that seperate connection? I do believe the light green wire may be for the SWI-JACK but like I said I'm not sure. This seems by far the best place to get an answer after 2 days of trying to find a wiring schematic...HELP!

I am researchig your question and will be getting back to you as soon as I find something