[First c10]

Originally Posted by ls1nova71

The 3 relay set up is the way to go if you have 2 single speed fans and want them to operate on both high and low. https://ls1tech.com/forums/conversio...e-i-m-5-a.html

This is how I ran both my swaps using the ECM low speed and high speed triggers.
Low speed equal 6 volts dc to each fan (fans spins at 50%)
High speed equals 12 volts dc to each fan (fans run at 100%)