The picture that is above is correct but I'm telling you mine was wrong. If the one I received was correct then all the other JST connectors I have are wrong. On the KK 2 LCD you can add a pigtail so you can see battery voltage on screen and it was wired right because I used it before without smoke. I can't believe that all the other JST connectors on batteries and sets I have gotten from HK are wrong and this one is correct besides I now see a WARNING: Check Polarity of your setup before connecting this harness so they must had some get by wrong.
The JST plugs are wired correctly. What were you doing with it to fry your KK board. There should only be one BEC input on your KK board. It does not require any additional power... This is designed for lights and should be a direct connection to the LED'S and your battery via the balance lead. It should not be connected to the flight board!
*the right stuff - i believe he was talking about the voltage detection input.
JST polarity comes opposite to what it should be! Don't assume every connection factory-made are correct. Killed a couple of strips of LEDs with this distribution lead :(
( thus low in quality )
Other than the wrong polarity, it is a handy cable to supply power to LEDs or other application.
( thus not bad on value )
nice if you need a tidied up power distribution for several individual leds or sets - although i prefer the multi remote switch www.link for the blinker of me and my little sibling's truck. What i am thinking of using this for is for a power supply switch which switches between batteries (controlled by a micro processor). but i'm not sure yet, if it all works as expected. Shall be some kind of redundancy for a critical Quadcopter Application.
These are great!. I hated soldering JST wires to my power cables, Now I don't have to. If you want to use them on bigger or smaller batteries just get the corresponding balance connector and solder it on in place of the one that it comes with. Just remember not to reverse polarity when replacing connector and these only tap off one cell so your LED's may not be as bright as if you hooked them up to your power cable.
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WARNING! These connectors are wired wrong. I ordered 3 of these and all of the 4 JST connectors were wired in reverse polarity. I wasn't paying enough attention when testing a LED strip controller and burned up the wires on my 40amp ESC. You can correct this by using a paper clip or something very small and push down on the tiny metal tab on the pin in the JST connector and pulling on the wire and the pin will pull out of the connector. Make sure to bend the tab back up before you put it back in the correct position in the connector as this is what locks it in the connector.