I'd like to get a supply of these but want to make sure I get the right part. As best I could find they are Molex KK series part # 22-01-3047 but they dont quite look the same as in the polarizing tabs as shown HERE. Maybe the ones I have are a knock-off or another manufacturers equivalent?

Assuming the pin pitch is right, they're pretty much the same. I'd suspect that they're a copy of those Molex KK's.

My local electronics stores sells those: [www.jaycar.com.au] but they're the same pitch as those "dupont" connectors so you might be able to use one of them too. (these things: [www.sparkfun.com] )