[cebra]

I am going with the 3 relay method such as below. From what I can deduct the 3 gray wires are the power wires to the fans so I should use heavy gauge wire (like 10 gauge). The 2 blues and 1 black are the grounds and I can just use like an 18 gauge black wire for these. Just want to make sure I have this correct in my head so I don't run a small wire for a power wire.