Installing aftermarket HU.. wiring harness ??
 

I looked around and I could find anything on what I need to do to install a aftermarket HU in my '04 FIT.

I have a reversing camera also.

I took out the factory HU and there was A LOT more cables than I expected.
I have no idea what to do now.

http://www.imageshost.eu/images/2015...SC_0006.md.jpg
http://www.imageshost.eu/images/2015...SC_0008.md.jpg
http://www.imageshost.eu/images/2015...SC_0009.md.jpg

So I think I need a wiring harness now, to adapt to a new HU.
I was just gonna get an Android powered HU like this:
http://www.ebay.com/itm/Android-4-2-.../191227453040?

EDIT:
So I figure I'll need one of these Honda>ISO:
http://www.ebay.com/itm/ISO-wiring-harness-for-Honda-stereo-convertor-HWH806-ISO-/200959637055?pt=Motorcycles_Parts_Accessories&hash=item2eca20b63f&vxp=mtrI think this is just the radio antenna, but could it be for the Reversing camera ?:
http://www.ebay.com/itm/Radio-Stereo-Factory-OEM-Reverse-Antenna-Adapter-car-audio-parts-HO-06-/200910073415?pt=LH_DefaultDomain_0&hash=item2ec72c6e47
There are still a few cables though..
probably for GPS antenna, satellite, VTR function, and the other stuff.

Like when does the HU know when the car is in reverse ?