bulb problems.

so while trying to find ways to custom any bulbs to fit into the jdm headlight, i try the h4 hid and it fit but then i took it out cause it wont turn on. after that i plug back in the h4h to find out that the low beam is gone…only the high beam works now and this is only for one side…the other side still has both low/hi.
i checked all fuse and wirings and there still good…so im assuming its the bulb itself but wouldnt the hi beam work too?

Did u try switching the bulb with each other? Left to right right to left?