The E7009 has a NEW 24 pin connector on it, but the other 6 connectors are the same as the older (E7001,E7003, E7005 and E7006).
R12 CN2851 20pin
part# 90980-12038
R11 CN2901 12pin
part# 90980-12183
R10 CN7001 20pin
part# 90980-12259
R9 CN1701 5pin
part# 90980-11909
R7 CN1706 6pin
part# 90980-12209
The square grey connector (next to the blue connector) is the same on all the models, it is the GPS antenna connector. That connector will come with the GPS antenna of your NAV unit.
The new 24pin connector on the E7009 seems to be a combination of the old R8 CN1705 10pin video/communications connector (90980-11909) along with the old 4pin Reverse Camera connector and the old 8pin Voice Command Mic connector. (The Camera and Mic connectors would each have come already attached to both the mic and the camera).
The pins to insert into each of those connectors could be scavanged from the
'Y Harness' that Toyota and others sell, or from an actual car
RADIO HARNESS, or from the CD Audio cables like
THIS, or you could search for the individual wire crimps like
THESE and crimp them yourself.
As for identifying the correct wires, it shouldn't be too hard to get a member of the forum to take a digital photo of their harness so you can see the wire colors.
On that note you should DEFINITELY check this
PAGE out. He has pictures of the individual connectors, many of which clearly show the wires. You can also take a look at the E7006's
SERVICE MANUAL.
Hope this was of some assistance, good luck.
Chris