Mercury - Digital-to-Analog Trim Sensor Converter 40-115 HP FourStroke & OptiMax V6 8M0111837. Overview. The Mercury Digital-to-Analog Trim Sensor Converter (8M0111837) lets you use a traditional analog trim gauge with engines equipped with digital trim senders. It converts the SmartCraft digital signal to an analog output, so you can keep or install an analog trim gauge without changing the sensor.. This OEM converter installs quickly and allows trim display on standard analog gauges while main