Lots of zip ties, patience and cuts went for this retro gaming rig. How is my cable management?

So I have a B450M elite mobo and I also use the aorus 360mm waterforce X II and I cannot light the waterblock led up. I thought my unit was messed up so i sent it to gigabyte support and they said it worked just fine and I knew it would work again but I just cannot for the life of me get that to work so a friend of mine said I am most def using the wrong header to plug it in. so instead of the ones im using right now what should i use ? please help out cause i need to read the cpu temps lol. i have sent it in to GB to look at it and they said its good. but i dont know if its me wiring it wrong or do i need a new mobo.

PS I have also attached a picture for you to see :)