Which aeropro wiring adapter to use for HU

[Scotty]

G'day All,

Reading the how to guide on installing a stereo, noticed that rather than butchering your wires, an aftermarket Aeropro wiring loom can be purchased. The only thing I don't get is this. If you look at my first attachment (717550.jpg) this is these are the current wires coming out of my car.

There are two looms, both male, that plug into the factory tape deck.

What has been suggested is that I buy the Aeroprod AP7550, as you can see in the second attachment (AP7550.jpg)

Now, this is only 1 wiring loom which I'm guessing plugs into one of the factory points. My question is, what do I do with the second factory plug? What is it for?

Please advise, as I want to order one from Autobarn, but they don't know which one to get.

Thanks to all who reply.

[gaffa]

ok this a easy one yes there are two plugs need big one holds front speakers power wires smaller one is for the rear speakers

[gaffa]

nissan skyline wiring

top one R32

bottom R33

nissan wiring loom digram