A Z connector is blue in colour. and is compatible with Futaba, JR , Hitec etc. Just make sure the wiring is the same orientation, ie. black(-) on the outside, red(+) in the centre and signal on the other.On JR the neg(-) is brown. The signal could be white, yellow etc. The old sanwa/airtronics connector is wired backwards on the pos. and neg. and had three moulded-in ridges inside the plug. They will NOT work with anything else. Hope this helps.

Cheers, Dave.