This article has also been viewedtimes. Run the power wire to your amp. Figure out where you're going to place the amp, put the beginning of your power red wire there and give it about a foot of wire extra, then begin to hide and run the power wire to under the hood. Next you're going to connect the the positive and negative speaker wire to your subwoofers. Can you add subs to a factory radio? Make sure the power light on the amp is on and you're ready to enjoy! This could be caused by a bad ground.
You should be able to connect it to the auxiliary on the back of the stereo unit.
How to Hook Up an Amp to Subwoofers
How do I connect my new sub to my old amp? Can you add subs to a factory radio? Some systems will only require you to use bare wires as a connection. Most amps will come with a complete wiring kit. Remove any painted, rusted or dirty surfaces with a file or sandpaper to ensure a good ground connection. Flag as If you have an subwoofer enclosure, There will be positive and negative terminals.