Stack professional stepper motor gauges offer a new level of precision performance. These 52mm auxiliary instruments combine digital microprocessor accuracy with exacting stepper motor needle movement for unsurpassed reliability. Stack professional stepper motor analogue gauges also offer the readability of 270 degree mechanical gauges with the easy installation and safe operation of conventional electrical gauges. Plus, white LED backlighting and illuminated needles ensure excellent readability day or night, while remotely mounted solid-state sensors keep hazardous fluids in the engine compartment. Stack gauges are delivered with a wiring harness and associated sensors.