We've had a used 150 S/W II Yamaha installed on a 20' Grady. The Speedo has a fuel gauge as well and so the Techs disconnected the old standard gauge and went with the Yamaha gauge.<br /><br />The question is, can I connect both fuel gauges in parallel, off one sender? The Yamaha gauge doesn't appear to be all that accurate, perhaps a compatibility problem?<br /><br />Thank you!