Installing an aftermarket stereo in a car to fit your needs is cheaper and easier than buying a vehicle that already has the stereo you want. Honda Civics have an easy-to-remove dash on their older models (from 1995 to 1983), making for a fast installation. The job can be harder with newer models (from 1996 to the present), due to hidden screws in the dash.
Use the screwdriver that fits your dash screws and unscrew the two screws on the left side next to the door. Move to the right side of the car and remove the two screws in the passenger's side of the dash. On each side, there is one screw on top (next to the air vent) and one on the bottom (next to the kick panel). Put these screws aside so they do not get lost, and place the dash in the back seat, out of the way.
Remove the screws from the front of the existing stereo. There should be a total of four: two on the top on both sides, and two on the bottom. Pull the stereo out of the slot and disconnect the wiring harness from the back of the unit. There is a push slot on the harness that must be pushed in completely to release it.
Place the face from the installation kit around the new stereo you will be installing. Put the rear of the stereo into the face first, so that the face sits evenly with the front of the unit. Put the stereo nearby for use later. On the new wiring harness from your installation kit, strip down the ends of the wires 1/2 inch from the end, as well as the wires from the existing harness from the old stereo.
Twist the ends of the same-coloured wires together, one wire from the old harness to the same-coloured wire of the new harness. Do this with the yellow and red wires first, as these are your power and ground wires. Finish twisting the remaining wires; when you are done, use the electrical tape to completely cover the exposed wires of each pair you just twisted together. Pull off a strip of electrical tape about 4 inches long and gather the wire harnesses together. Use the tape to hold the two together closely so there are no loose wires behind your dash.
Attach the end of the new wiring harness to the back of your new stereo. Push the harnesses back into the dash area and down behind the ashtray in the lower portion of the dash. Push the stereo back into the recess of the dash and use your old screws to secure the new faceplate. Replace the dash from the back seat and push it down into place before replacing the screws. The dash should fit tightly around the steering column. Remember to push the black rubber gasket around the steering column down inside the dash before re-screwing.