Swapping out non working speedo/adding a radio

I have a cuda, so not sure how similar the Dart is. My cuda has an unusual size speaker, 4x10? It is held in place by two special clips/studs. You can't sheet screw them in as the screw will come through to the topside. Make sure you have the correct size speaker and use the original clips. Speakers were originally two wire and ground through the radio. Your original radio will have a green and a black wire paired together for the speaker. The radio will have a connecter with red and orange wires. Red is the hot wire and orange wire is the radio light. Hope this gets you started.