Any ideas for a temperature controlled fan for Bass amp

[Jazz P Bass]

Can't get much simpler that that, now can we.

[g1]

g-one and JMF swoop in for all the glory when I covered snap action thermostats in post #2, jeeze there's no justice
:.(...

Sorry Ted, I try to acknowledge other posters when I'm re-iterating, I guess the white rogers threw me off.
When that happens to me, I find myself scratching my head and thinking "hmm, didn't anyone read what I said, do they all have me on their ignore list?"