The people at CSC are always very helpful.
I just talked to Gerry in the service department, and he told me the thread for the radiator fan switch is 16 mm in diameter. These switches will occasionally fail, so It's good to have a spare switch on hand. However, these switches are always sold with the complete radiator, rather than alone.
I believe the following, radiator fan switch is equivalent to the switch employed by the Zongshen RX3. It is a switch designed for the following Suzuki and Kawasaki motorcycles.
Suzuki
GSX-R600 97-05
GSX-R750 96-08
VL/VZ800 01-11
DL1000 V-Strom 03-09
GSX-R1000 01-04
SV1000 03-07
TL1000R/S 98-03
GSX-R1300 “Hayabusa” 99-07
Kawasaki
Ninja ZX-6R 2003-2004
ZX636 2003-2004
ZX600 2003-2004
http://www.ebay.com/sch/i.html?_from...witch&_sacat=0
__________________
Spud
"Never argue with an idiot. He will drag you down to his level, and beat you with experience."
Mark Twain
2015 Zongshen ZS250GY-3 (RX3)
2006 Zongshen ZS200GY-2 (Sierra 200)
2005 Honda XR650L
2004 Honda CRF250X
1998 Kawasaki KDX220
Mods made to my Zongshen ZS200GY-2:
http://www.chinariders.net/showthread.php?t=6894