How do you hook up a sub and amp to a factory radio?
The best way to connect it to a factory system is to tap into the stereo’s speaker outputs for the amp’s input signal. Then send the amp’s outputs back to the stereo’s harness, and on to the speakers through the factory wiring.
What do you need to hook up a sub to a factory radio?
Use a Converter
You will need a line output converter if you have a factory car stereo in your car. This is because the factory head unit generally tends to have speaker wires but does not have a preamp output that can convert them into RCA signals.
Can you wire a sub to a standard head unit?
The only way to add a sub to a standard stereo is to add pre-outs, using something known as a “High-Level Input to Low-Level Output” converter. This wires into the speaker outputs coming out of the back of the stereo – I wire these into the rear speakers.