So yea i was installing my HID kit today and i noticed only one of my healights turns on

. My hid kit has the ignitors built in the ballasts. I noticed that my relay harness( the one connecting to the battery) only brings one connection to plug it in the stock bulb harness (the original bulb connector ) i tried switching the ballasts and bulbs to see if it had to do with one of them but they seem to work fine. so my question is does the relay harness bring 2 connections to connect to the stock connectors or just one?
any help is appriciated
p.s im new to this forum