They're soldered in, there is some judicious use of the hot glue gun, but it peels off pretty easily.
I am going to write a load more documentation on the use of these inputs and the way they're to be wired.
Theres a resistor needed on the analog input 1k->10k depending on the voltage in.
And theres some ideas that we'll need to use pin 11 connected to ground, and possibly a resistor to pull the voltage up or down depending on application... what RPM source are you using mate?
Rob