"If one light fixture or any section of the green wire is shorted to ground then it will be the same short to ground at all the connections."
flybouy, Glad you said this as I was thinking the same.
Plan at this time is to pull the light fixture to access the green wire connection. Since to fixture are wired in parallel separating the green connection to isolate sections of the circuit. Doing continuity tests with each section should help map the "green wire path" until I find a short (hopefully) just a marette that just fell off.
As mentioned in original post, I have 2 lights operational when +12V is applied to the umbilical Pin#3. Now to guess which fixture to disect next.
