Ok, so I tried to highlight on a real picture where the red, yellow, and blue lines are. Photo is from SRT6NTulsa (first one I found in the gallery)

ORIGINAL PICTURE:


HIGHLIGHTED PICTURE:



Hope that helps visualize it on a M112K Engine.

Both the Red and Blue highlighted coolant lines flow under the supercharger (out of view) and into the intercooler. They are to/from coolant lines. The Red is the return line coming back from the intercooler with excess pressure causing coolant to flow into the yellow highlighted line and into the reservoir...

EDIT: I am 95% sure of my explaination...please correct me if I am wrong.