Is someone able to help me and tell me the name of this female cable terminal (the white part)?

Also where to buy them would be appreciated. Images below are 4 pin, but 2 pin is also useful for me.

 

There are many generic types, the critical info is the pin spacing.

They are commonly 0.1 inch, 2.5mm, 2.0mm & also various smaller sizes.

The harder part is if it fits into a specific shroud to prevent it being connected backwards - that part is usually specific to the manufacturer.

 

Just a 4 pin connector to me.

 

Try here

http://www.amphenol.com/products/index.html

 

Browse through Digikey:

Connectors, interconnect
Rectangular - housings

Check off 4 positions, 1 row

Measure the pin spacing (pitch) and select it.

Hopefully you'll see it...

(FYI contacts are usually sold separately for these, they crimp onto the wires)

Try to look for a faint manufacturer logo on the connector, sometimes you can find one.

Like Robert said the trouble is the polarity tab.

 

Thanks, I might actually go into my local Jaycar store and look for them.