I recently just bought an EDM 96-00 Civic gauge cluster. All the gauges work correctly and most of the lights work. The only lights that do not come on are the lights at the top of the cluster, the ones that light up the faces and needles. I noticed on the back of the cluster there is an orange port. What connection is this for? I removed a 99-00 civic si gauge cluster from my car to replace it with the EDM cluster. The Si cluster has the two large ports at the top, a yellow port, and green port. The EDM cluster has all those except the green one. I'm guessing the green port is for cruise control on the Si cluster or any other cluster with cruise. I am going to try and replace the lights at the top with the circuit board and bulbs with my Si cluster parts. Just trying to see if anyone has any info on the EDM clusters.