I have come to a conclusion!
Here we have, the sonnenrad (pic1), a symbol that outdates the altright yet it's heavily associated with it, as it was found on floor of the north tower of Wewelsburg Castle (high rank SS meeting place)
And here (pic2) we have the egyptian representation of Ra, the god of the sun.
Now, bear with me here, let's look at the composition of the word "sonnenrad"
"Sonne" comes from the german "sun"
"n" in hieroglyphs into account it can mean "water" also known as the mother of all life by the Egyptian's
"ra" in this context is obviously the god of the sun, Ra
"d" in hieroglyphs is the equivalent of a hand, also known as to imply an action, willpower , work done by hand.
So what is the meaning of this you ask?
Honestly this is left for a wide spectrum of interpretations, the only thing i can say for sure is that the sonnenrad implies the intervention of humanity's will on the divine and the creation of life, or maybe the way we shape life by just existing.
It's up to you to come with your own interpretation anon, but i'm sure this can bring us closer to reaching the meaning of this old rune.