The connectors for your Wetsounds should have a total of 4 poles. 2 you are using for audio the other 2 use for your LEDS. Just make sure to double check that male and female are the same config. If for some reason you only have 2 poles you need to upgrade the male and female side to 4 poles.
This is an exploded view of your Wetsounds connector.
The connectors on the left only has 2 poles and would need to be changed to the connector on the right with the matching female end.
The alternative to this is drilling..... I would get the right connectors if you don't already have them. Tim from Wetsounds should chime in here just to confirm but this is the best way that I know of. Good Luck!!!