What damage can a broken headlight cause to a taillight?

What is your question?

I bought this salvage car from auction and it had a couple of damages but this is about the headlight. The turn signal for the headlight when I first got it moved very fast, now the turn signal on the dashboard looks very dim only for the left side where the headlight is damaged and moves slowly. From the outside whenever I turn my car on the loose wires give a little spark, that did not happen from before. Its been snowing and raining alot recently so it must be that. Im not worried about the headlight, i was going to have it replaced recently until when I was locking the car, the taillight from the back looked very dim. The brake light and the reverse light for the left side. After that i've been covering the headlight to pervent further damage. Can this be a wiring damage? Will it not be a issue after I changed my headlight? This is all on the left side where the damage is, the right side works perfectly fine. Thank you.

What makes this problem better or worse?

Water

How long has your 2016 Honda Accord had this problem?

A week