I have a Yanmar 1610 that kept blowing the 5A fuse. Troubleshooting led me to a 2" black box under the instrument cluster. The 2" black box contains a small circuit card (covered in epoxy) that is fed by 8 wires through a 9 pin connector. The 2" box has shorted diodes and heat damage and cannot be salvaged. I believe the old part number was 194420-57310, but is no longer available and I don't see that any replacements exist. I'm not sure what functions this box provides and I haven't found any replacements. Any help on what this box does and how to replace it is welcome