Pinched from: http://www.e-dirt.co.za/forum/forum_posts.asp?TID=51130
“I installed a Spal OEM fan on my 2005 KTM. Under the tank, near the ignition coil there was an unused connector with a yellow/red (positive) wire and a brown (negative) wire going to it. This is the fan connector. I just put my fan in with a simple on/off switch next to the display panel, which I switch on when tackling slow, technical terrain.
Haven’t boiled once since installing the fan “
If you want a simple thermo switch. Jayca, altronics and elec stockests. Will be able to get in a small switch in from mem 60, 70, 80and 90c settings. I had replaced the std switch that failed on the Ag4 :p
They are about the size of a coke bottle cap. I run an 80c one. It failed in time but was only around the $10 mark.
A computer fan could be used. But theyre not water or dust proof.
A call to some wreckers may turn up a suitable fan. The 640 fan is quite small and reasonably thin.
