AutoMeter Cobalt Series Shift-Lite Tachometer (AU6299)COBALT 5" TACHO 10,000RPM 5", Pedestal Mount, 0 10,000 rpm, External Blue Shift Lite Part Number: AU6299 Operates on 4, 6, or 8 cylinder engines with points, electronic, and most 12V high performance racing ignitions. Auto Meter Cobalt tachometers feature a black face, white numbering and blue accents. At night the burst of Cobalt blue light shines through the dial and into any interior scheme.