[simmons0613]

I just bought a cheap amp and 12" sub to install in my car until i can afford a nicer one. However I cant seem to figure out how to install my amp to my factory 08 pioneer stereo. I've noticed that it has a sub output on the back however I'm getting no sound. It continues to use the internal amp. Please help.

I've add a photo of my stereo, i will upload pics of the reverse side in the morning...