Question - Right Side AC Line / Heater Core

Ok. Silly question and perhaps Im a little tired at this hour and running put of steam..

Car: 1986 328, USA car

Replaced heater hoses under dash as well as AC duct lines etc. Took heater cores out and had them pressure tested..

Im now re-installing the right side heater box and can't remember how the AC line the runs from just under the brake fluid tank to the font goes around the heater box.. I hate taking things apart when I get stuck.. Does it go around the outside of the heater box, meaning right side / against the inside of fender... Or, does it go around the inside near where the heater valves are... Im thinking if I do it wrong the spare tire shroud won't fit and I'll have to re-do...

Anyone have a picture..? I have looked but can't find exactly.. Should have taken more before dismantling..