My voltmeter has never worked since I got my boat in 99, but my tach has stopped working now. I suspect the rectifier, I checked the volts with my hummingbird while fishing the other day and the cranking battery had 11.3 volts. Motor is a 1990 Evinrude XP175. I saw some rectifiers on ebay for $170 and shipping. I am not near the boat to check serial number but I think part number 395204 looks like mine. Does this sound like the right part number?