I had DMCEU fans on a stock shroud, and I began overheating with the higher ambient temps. As a result, I found that 1985-1992 Golf fans push significantly more air, but at a cost of 200w.
Yeah, I deleted the pesky thermotime switch and moved the hot start relay into a more permanent position. Car starts every time now.
While I was rewiring much of the car for the cluster, I decided to use a momentary switch setup for the defog.
I used this timer:
http://www.euramtec.com/parts/b/b01/73922312.html
Coupled with this switch:
http://www.euramtec.com/parts/a/a07/1304m.html