Home speakers are easily used in a car. The biggest differences between car speakers and home speakers are speaker impedance and speaker construction material. Home speakers usually have a minimum speaker impedance of eight ohms while car speakers can go as low as one ohm. Car speakers are also built stronger than home speakers. This is because car speakers encounter higher temperatures, more vibrations and more abuse than home speakers. Connecting home speakers to a car system requires only a few things.
Items you will need: Wire strippers, Wire cutters, Speaker wire, RCA wires, if the home speakers have RCA plugs
Open the trunk and disconnect one pair of speaker wires from the existing automotive speakers. Note which wire is positive and negative when removing these wires.