twin brushless ESC wiring
 

I've got a project in the works involving 2 MMM's each running a 1515 1y. I've come upon something that I'm not sure if its a snag yet or not.

last night when I was starting my unslow harness. I had the ESC's plugged into the servo y-harness which was hooked up to the rx. I wanted to check the esc for function and hooked one pack up to one of the esc's.

To my surprise both ESC's turned on. I'm fairly certain this has to do with the BEC backfeeding power through the y-harness into the other ESC turning it on. Is this a issue with the y-harness. Or would I just cut the red wire on one of the y-harness legs to eliminate this?

Thanks in advance

Yes, the powered ESC is sending BEC voltage to the brains of the other ESC. You could remove the red wire on one of them, but I would suggest using a Y harness instead and removing the red wire on one leg of the Y. Otherwise, programming the ESC with the wire removed will be a PITA.

Thanks for confirming what I had suspected Brian. I was planning on just removing one of the red legs off the y-harness