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One nice thing about a switch like that, it doesn't matter if it's power or ground that the single terminal is connected to. On my setup I ran the ground from the relay through the sensor to a screw on the fender. It would have worked just as well if I had run power to the switch then to the relay. All the switch does is complete the circuit, it doesn't care if it's power or ground it's switching. Just figure out how you want to wire up the 960 relays and you're good to go. My guess from the colors is those are the + signal and the relays share a ground.
What worries me more is it says
SEE Note 2 Opening Temperature 1 is 80-85 degrees Opening Temperature 2 is 88-93 degrees)
That says it's a normally closed switch that "opens" at 85º and 93º I'm hoping that this is a typo or I'll have to grab some different relays to use with an opening circuit.
I also like the temp's better, '92 is 5C over my thermostat's full open temp and you can start to see the gauge spike. I put an 82/77º sensor in there to test tomorrow, I'll see what my tattletale light tells me about the duty cycle of the fan. I'm thinking it will be a little low and the 85 will be about right. It's not a heck of a difference, each 1ºC is only 1.8ºF but it's fun to play with it.
I won't be able to set up the dual temp thing this weekend as I'll be out of town, hopefully I'll be able to test the low speed function mid-week. I doubt the high speed will ever come on but I'll hook it up weekend after that.
Cheers
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Dave Shannon
Spring Valley, California
'67 1800s
'73 1800ES
'88-240
my pages
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