ITEM NAME:Car Motorcycle Digital Tachometer Tacho Gauge with Battery Overvoltage Alarm New Red LED Car Motorcycle Digital Tachometer Tacho Gauge with Battery Overvoltage Alarm Display Engine Speed Automatically Features: 1.This meter use high-flux 0.36 nixietube,high performance SCM driver. Can be used in car and motorcycle which use electronic ignition. 2.It can display engine speed automatically. When the engine started,the meter change to display the engine speed.If the battery overvoltage(>15V),the display of the meter will Flashing alarm. It can measure engine speed over ten thousand circle per minutes.For example 16000r/min display -160 Operating Voltage:8v-17v; Parameter: working current:25mA voltage accuracy:+/- 0.1v speed accuracy:+/-30r/min speed range:120-16000 r/min Display rotate speed Overvoltage alarm Fit for 1-8 cylinder gasoline car Item size: 48 * 29 * 22 mm Mounting holes: 46 × 27 mm Wiring: Black wire:groundwire,connect with negtive output of battery Red wire:Power supply,connect to Electric door lock outlet wire Blue wire:Speed signal,connect to Ignitor outlet or trigger lines Mounting instruction 1.we suggest connect black and red wire to confirm the right display and then connect other wire. 2.speed signal come from ignitor signal.can connect to follwing: a. wire of electronic tachometer (the signal is best) b. lnlet wire of high voltage ignition coil (we suggest here if you don't have choice a) c. lighter outlet wire d. lighter trigger lnlet wire e. trigger coil outlet wire There is different interference make signal unstable. You can choose the best option to your car.In usually,the signal from a is best.From b is good too.But remember never connect to high voltage outlet wire of high voltage ignition coil.The hgih voltage will make meter burned. In order to fit todifferent engine,you can adjust frequency demultiplication parameter to ensure the meter display right speed. The way to ajust speed parameter is:push the.It can display engine speed automatically. Blue wire:Speed signal,connect to Ignitor outlet or trigger lines. d. lighter trigger lnlet wire. e. trigger coil outlet wire. Can be used in car and motorcycle which use electronic ignition.
