Mtdreamweaver

I am a woman who owns and works on her truck. This is baffling:

Had battery draw for several weeks, resulting in low battery, won't start. Found it to be AC compressor relay under hood, replaced, draw ended. Now...

1. Gauges don't activate for a few seconds after starting.
2. When starting, time on clock goes to 12:00 after starting. It starts ok.
3. Then starting in morning it goes to 12:00, reset time, then after running errands, clock shows correct time after starting several times.
4. Now, yesterday, shows rear passenger door ajar...which it is not after closing it several times.

Originally thought it was starter, drawing too much when starting, but now it's not the case
Had batteries load tested at O'Reilly's, they are good.
Suggestions?