Imax B6 question

[Andy68]

I have recently bought a second hand imax b6 balance charger , The seller found a balance lead but is unsure it is the correct one , Has anybody got one of these they could have a look at for me and let me know



As you may be able to see from the picture the plug fits ok and the wire sequence looking from the front is yellow / red / black
Would i be correct in thinking that red =pos black = neg and yellow = balance ?

Andy