Does anyone know what connector this is? My sons been running an older R1 Superlight esc but I didn't have a program box and hadn't been able to find one. Bought another older R1 mod esc to get the program box but that one uses a regular JR style servo connector. This one is smaller but still 3 pin. I looked online and dug through my connector/wire graveyard and dont have anything..Thanks

I'm not confident on the sizing without measurements but it looks a lot like a micro JST 3 pin.

Quite likely a 3-pin JST ZH connector. Does it look like a 3-pin version of a sensor cable?
https://www.jst-mfg.com/product/pdf/eng/eZH.pdf

Robotics stores sell ready-made leads with the matching plug already crimped on.

Thank you..yes has two slots on each side like a sensor cable..

The ZH has a pin distance of 1.5mm If that is the case then yes, it can be a ZH