Maybe the chassis schematic - page 1 will help you. It shows the circuits for the gauges. Note that the gauges use the same power and ground and the same circuit for data.
If you are talking about the gauges not working, I would start by unplugging all of them at the panel and then trying a new fuse. If the fuse does not blow with the gauges unplugged, then plug them in one at a time to try and determine which gauge is causing the trouble. FWIW, my wiring harness for the gauges has an extra gauge plug behind the dash. If something metallic got in that plug, it could cause the fuse to blow.
http://www.alpinecoachassociation.co...%20Sht1of3.tif