On OEM front head lights, the two inner (bigger plugs) are for brights. The two outer (smaller plugs) are for the dim lights. When connecting OEM lights including blinkers, you will have 6 plugs on elec lighting wire bundle. Starting from right to left (as viewed from sitting on bike). Connector (C) 1 is for RT blinker, C2 - RT front dim, C3 - RT front bright, C4 - LT front bright, C5 - LT front dim, C6 - LT blinker. (There is no ground in the wire bundle).
If this doesn't fix your issue, take a pic of the back of the head lights you bought as the eBay ad does not depict the connectors.