I'm glad the group is talking about cuz I need some guru help. I dislike SeaDoo gauges cuz they are so much smarter than me and I am not a replace parts kinda guy. I like to know "why." Currently I am or will be trying to get the Gauges on a 1999 GTX RFI to work. I will be starting on this next week. Problem is... there is only one BIG plug that goes into the MPEM area. If something isn't coming out of there the MPEM Is likely to blame. I can see someone made connections on both instruments so I purchased 2 used gauges. They look to be in very good condition. When I plug the harness in I am getting beeps from somewhere that sounds like inside the MPEM. I even had my wife listen and search the ski. She hears much better than I do. I'm getting no response from the gauges. I even started the ski and the gauges are not coming on. I am thinking the someone tinkering with the gauges previously blew out something in the MPEM. I have read posts by knowledgeable members on gauge problems so hopefully someone will give me some input. If it is blown up.... that's OK. At least I can move on. Help would be appreciated.