Hello there I know I am late but I had this same issue recently and it took me about 2 hours of searching to find them! The connector you are looking for is 4 way MATE 'n' LOK.
Here is a ebay link to which to just got mine from:
http://www.ebay.co.uk/itm/Genuine-TE-Tyco-1-to-15-Way-MATE-N-LOK-Electrical-Wiring-Multi-Connectors-/142033050277?var=&hash=item2111d45aa5%3Am%3AmwFTWkKX0W8mlUEQbZSFtcg
Hope this helps future googlers!