2 Channel amp no headunit
Hi, Can I hook up a 2 channel amp with no headunit by combining the front left and right speakers, and the back left and right speakers and running them into the amp that way? I was given an old jensen 2 channel amp so I would like to use that. Also what is the rca part used for? I was going to just run wires from the headunit harness since its not being used anymore into the trunk for the amp.
Any help would be greatly appreciated. And I did search but everyone seems to be using 4 channel amps.