The two negative from the batteries go into each other using the black middle series connector (two male ends) than the red connects to positive side xt90 and exits through negative to escsl33py wrote:You need to make sure your batteries are connected correctly in series. The middle + and - should pair up and you should have one red positive and one black negative go to your esc.
Don't connect until that's clear!
Black from the battery. Goes directly to esc.