They don't sell those pieces individually you have to buy the whole harness your best bet is to crimp the wires together if it's broken that way or try and get spade terminals that fit your drain pump connection size and just cut the connector off and plug it straight into pump, you'll have to zip tie them somewhere so it's strapped really good otherwise while spinning those wires will break again or pop off. Take the pump completely out and take it to the store with you tryto find insulated female spade connectors so that way you know you have a good match.
Good luck.

THis is your kit you need it doesn't show the wires with it but it has the harness you need. In all honesty Cabrio's aren't the greatest washers and are known for numerous problems that aren't cheap, you got lucky with your problem that's not a hard fix but i wouldn't invest too much money into that machine. Go look at youtube video's and just type in Whirlpool Cabrio's and you'll see a tons of video's with angry customers.
Good luck
Whirlpool W10183157 Kit - AppliancePartsPros.com