Yeah i guess your right perhaps connecting to ecu might be a risky thing. I have the PDF of the manual for the device below, it's on page 18 (wiring instructions).
So I'm stuck on where to connect the red blue and yellow/green wires.
Perhaps there's a better location to connect those wires...
I appreciate everyone's help
http://gizzmousa.com/file-copies/MS_2_Manual.pdf