av200 direct drive wire confusion

[liamhorsley]

hi, iv just finished installing my direct drive upgrade on my av200 gimbal, now normally the power lead on the servo wire is always red but with this i have 3 wires, non of which are red black yellow or any of the normal colours i would associate positive or negative with, the wire colours are grey purple and blue, the wires need extending so im gonna replace them with red black and white servo wire but i need to no which of these colours are positive, negative and signal,

can anyone tell me whats what ?

Thanks

 

[Bartman]

Those three wires are the three phases of the drive motor so no one of them will always be positive or negative. They just get hooked up and if things are backwards there might be a software function to reverse it or you just change any two wires.
I'm not familiar with the kit you're working on but that's generally how brushless motors work. No positive, no negative, no signal......just three phases that share wires as the phases are powered and sequenced.