Hi all

About to convert the original Nissan Patrol cassette stereo with a Kenwood unit. Most people say to use the Apero APP0120 wiring harness. I noticed on images of the APP0120 it appears it takes the 2 plugs from the old stereo, however I notice on my stereo I has 3 plugs. I am wondering if anyone knows what the third plug is for (the one with the black, light blue, and violet wires), and do I need a different harness

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Thanks in advance
NEV