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10 amps or less, your simply closing the relay coil circuit.

Great to hear it does help! I'm not sure what it proves.

bat+---------relay pos-------relay neg -------- Switch-------- Ground Bat+ -------switch---------relay pos---------relay neg------Ground Both work. One switches battery +, the other switches battery - to activate the relay. The stock controller switches the negative source, to activate the...

You will not have a dead short, you will have an electrical device(load). Those 2 small terminals are on either end of a coil of wire! That is what is called an "electromagnet". Your description of voltages and when you have them sounds correct. This is also very well covered in the -20TM...

Which coolant sensor did you replace? Was it the one on the drivers side head, intake side, rear?

A bit of personal trial and error may be needed for your use(to "perfect" the guessing game of manual control). There is a difference between starting and optimal starting.

Also, a controller continues to energize them after it has started. This is called after glow. It helps.

Yes, somewhat. If your engine temp is around 150 or higher, you should not need them at all. Outside temp below freezing, maybe go more seconds. All this also depends on which GPs your using, what battery voltage you supply and your engine condition. A working controller card is my preference.

12 seconds.