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In the cars with the factory nav and/or tv there is a factory pre-wired 3-pin connector behind the monitor that is taped up to the main harness... the 3-pin mating connector corresponds to the part number that i mentioned in my write-up... the factory harness consists of that connector, one resistor at 300 kOhm that tells the radio circuitry that there is a load on the AUX input, the radio activates the verbiage "AUX" as part of available sound inputs on the monitor... the factory harness is only long enough to route the 3.5mm industry standard jack to the area of the glove compartment or within the reach of that cable...
if the car does not have the factory nav monitor, then the factory harness comes with bare pins to be inserted into empty slots on the business radio in the front dash, and the other end is industry standard 3.5mm jack...
since i did not want the jack in the glove compartment area, i just bought the parts, and put the wires together... opening up the monitor was one of the easiest parts of this job - pry the surrounding shroud out, use T-10 torx bit, take 4 torx screws out, pull the monitor (don't drop it or scratch), find the factory connector that is just taped up to the monitor harness, free it up a bit, connect my harness, and then the hardest part, fish my harness to where i wanted it to be... if the wires and the pins are connected correctly, instantly on your screen you get an AUX when you do the MODE button...
I can guide you guys step by step... first, look over the PDF to see if that document makes sense...
then, if you would like some assistance, just let me know...
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