Wiring kits?

This does not fix everything, I do know where to look so I am not bouncing around the car trying to see a red lite blinking, to show me the problem.
I sometimes did not cinch down connectors properly or some of my as-builds have problems or for whatever reason.
So I made three of these boards. Hopefully not all of them will get lost when I die. I show every change I made and any creations I made and modifications to the norm.

One of these I carry in the trunk of the car and refer to these most every time I need to work on electrical problems.
Two reasons. As I age my memory is not as good and when I die my son-in-law is not near as smart as I am and will need these eventually

my project next year, is to fix the rats nest of wires I created behind the dash and make it look presentable. Everywhere else is fine