I doubt its the condensation causing the AE problem. I'd double check the harness connection to the HL and also the connection to the AE inside the HL.

For the condensation, eh wouldn't worry too much. You can check the different caps for proper fit - side light, AE, and main.

There are I think two holes with breathers on the back of the HL assembly. Moisture can obviously go through there. You can check and make sure the breathers didn't fall out or just block the holes completely.

Good Luck!