Motorcycle Related Links
NA Auto (Austrailia)
One of few places I've seen the 6mm brass terminal connectors
THEPARTSCAGE
Only place I have found with 2 color wire. 16 awg comes in 2 color options
WiringProducts.com
Some interesting switch panels
Waytek
Electrical components
Economy Cycle
Connector kits
McMaster Carr
Electrical connectors and lots more
Digikey
All types of electrical components
Corsa Technic
Has some 6 pin and other connectors for replacing on wiring harness