do not worry about soldering. Its so damn easy. Buy the cheap one from autozone and some solder and your good to go. Put the solder on the wires and melt it on. Then wrap it in electrical tape.
heres a couple pics of the connector and toybox
The first is with the connector not pushed all the way down.
This pic is of the connector pushed all the way down
Here is the toybox with all the leds on. Dont mind the dirty finger
