I had to look. My electrical book is full of corrections I have made over the years. I think the engineers hand off "hard to read" notes to the graphic department ... and then never check back for correctness.
BUT; my 465 is a WH/LB conductor that only goes between the REM and the REAR AUX A/C CONTROL. Connector #C341-16, "rear aux temp input" ...to connector #C930-3, "rear aux temp output".
No mention of coolant.