At 01:56 PM 12/1/2009, neil n wrote:
>I ended up mounting my resistor pack outside the box up by the rad.
>(for future servicing. Reasoning being that the fan motor was new,
>resistor original AFAIK) Not sure how wise this is, but works fine and
>will be easy to get at if/when it fails.

You might have an overheating problem, since it was previously cooled
by the constant stream of air from the fan.  Probably not, though
(Toyota uses little freestanding coils that run red hot if they're
not in the heater stream  These are physically much bigger and cored
with ceramic) but it's possible that the mfr spec'ed them taking the
airflow into account.  I presume you're talking about mounting it
outside?  If not be sure *it* doesn't melt/burn other things.

>I have read of people suggesting that a resistor pack from other makes
>of vehicles could be used. I don't know. All I know is that I'm glad
>mine is easier to get at.

Anything of the right resistance or near it, and sufficient
power-handling capacity will work fine.  1.4 ohms tapped at 0.7
ohms.  Maximum power dissipated by the resistor will be about 75
watts or less by rough calculation based on measured full-speed draw
of the motor which is 12 amps.  The 0.7 controls the middle speed,
the 1.4 the low.

Yours,
David