For the connectors for the wiring i am using Deutsch connectors. The are really nice but pricy although I found going direct to the Australian distributer they were very affordable. Much cheaper then I could even find in the states.
Here is some photos of the 12 pin connector being put together for the Race Technology DL1 and installing the pins for the connector using the proper crimp tool.
These are the pins
The crimp tool
Putting a pin into the crimp tool
Putting a stripped wires in with the pin. This is hard because you need to strip the wire correctly.
All the wires crimped and pins on
Into the back of the Deutsch connector