[V6-12v] Radiator Fans not switching in correctly...

[Chris Thorp]

Tom Christiansen wrote:

> Likely. However,
>
> 1) Power resistors are actually fairly pricey. I wouldn't be surprised
> if a 25+ Watt type would be needed.
> 2) Resistors of that type require heatsinking to be able to handle the
> power. Sure, you could just bolt it to the subframe, but I question
> the reliability of that solution.
>
> For that particular resistor pack, I'd suggest getting one from the 
> junkyard.
>
> It's a different story with the resistor pack in the fresh air
> (climate control) fan. The resistors sit in the airstream for cooling.
> Normal 5W resistors would work just fine. As a matter of fact several
> list members have used that trick.
>
> Tom

You can get a nice 100w vitreous enamel power resistor for about $10 
from digikey.com in single unit quantities.  Handles the 100w in 25 deg 
c free air, no additional heat sink or forced cooling necessary.

-Chris