I need some help installing an amp to power subs. I am using the stock deck. 2001 Ram 1500. I spliced the rca cables into the rear output leads from the deck. I am having some grounding issues. Any help please?

Thank you!!!

 

are you using a rca adapter?

 

I spliced the rca cables directly to the rear speaker leads on the deck.

 

Is it a grounding issue or the negative speaker wire issue?