Mike, from the Pic it looks like you have a FEL. So, you can go from the output side of it to the rear. That loop could go right back to the original return connection point. There are many other more glamorous ways.
Now, what do you want to do at the rear? Valve? Just have added connections? If the latter, mount a plate or some other way to handle the added lines and quick connects (some just hang out of the way), then have a loop made up to connect the two quick connects to ensure flow when not used.