Replaced camshaft position sen. problem still persist. Did use after market part

What is your question?

I did notice after replacing part that on olden the was slight scratches on the end of sensor. But car runs great. Just can step on it and idles rough. Before I go replacing wires and harnesses I thought I would get some advice. I have notice that I have been getting slight light flickers and a small power loss when turning on lights and other items. Advice please.