1996 Tacoma Headlight Problem

I have a 1996 Toyota Tacoma 2.4 2WD without daytime running lights. I recently went to replace the light bulbs in my truck, and found that my factory pigtails were melted and falling apart. I went ti local parts store and bought a after market pigtail for each light. Now, my lights are screwed up, my brights are working, but my dim lights are very dim so dim I can see better with a flashlight. It looks like the dim side is not getting enough power to properly illuminate. I went an bought the book for my truck, and the book confirmed that the wires were properly hooked up.

I also talked to some other people about my headlight problem, and they told me to check the ground.

does anyone else have any ideas.