Wherever you buy the head unit you can buy all the installation accessories. Lets use Best Buy as an example (since I work for them). After you buy the head unit, go around back to the install bay and ask for a harness and install kit for a 1994 Accord. They will have exactly what you need. It's about 15.00 each. Now, to do the harness connections correctly you need crimps, zip ties, and to be able to follow the diagram included with your head unit. If you are not sure of your technical ability, you may want to reconsider doing it yourself. The wires are color coded, but always reference the diagram to be sure. It was only 2 years ago Pioneer just started adhering to the EIA color codes. Any more questions just post em.