Well I bought the two switches I posted above and wired everything up this weekend. I ran the motor for 5-10 minutes (open headers, my neighbors love me ) and the low speed triggered just fine. I didn't get it hot enough to trigger the high speed switch, but I did check to make sure it worked. I took the lead from the high speed and touched it to the post on the low speed switch which should throw the aux relay shutting off the low speed and opening the high, which it did. I'll get pics in a while.