Is anyone familiar with the backcourse light on a IN-385AC VOR? After studying the wiring I came to the following guess/assumption which may be wrong. You need to manually via a switch activate a relay which reverses wiring to the VOR's pointer in/out connections and causes the vertical pointer to act opposite of the way it normally operates. In short my guess is it requires the manual flip of a switch? Any expertise/familiarity is appreciated.