I have a 92-95 civic coupe. I have an B18C swap. Before the swap my speedometer was working intermittently. Just recently my tachometer died and stopped working completely. I thought my gauge cluster was the problem so I bought a JDM gauge cluster. I plugged it in and started the car and still no tachometer reading. I didn't run the car with the new cluster so I don't know if the speedo is completely working or not. I also noticed that the JDM cluster does not have a socket to plug a yellow and green plug. What are those wires for? Is it important for me to plug those in? Do I need to re-wire those somewhere?