On Wednesday, February 5, 2020 at 5:30:05 AM UTC-5, Colin Roney wrote:
I admit I am a total dummy when it comes to glider
electrics and navigation installation stuff but I am very keen
to try and correct the situation. Does anyone have any
ideas for suggested reading in order to try and understand
the subject.

The best I've seen is John DeRosa's http://aviation.derosaweb.net/presentations/#wiring . A lot of other great content on his site.

Dan