??48V 60V Multifunction Car Auto Voltmeter Thermometer Speedometer<br /><br />Specifications:<br /><br />Power supply: 48V - 60V<br />Working temperature: -30\u2103 - +80\u2103<br />Power consumption: 0.3W-0.9W<br />Pcb size: 105*53mm<br />Lcd size: 86*40mm<br />Screen color: full color<br /><br />Instructions:<br /><br />1. There is a protective film↔? you need to tear up the LCD before boxing.<br />2. Do not reverse the positive and negative power meter↔? please note that across the board to avoid a conductive material↔? in order to avoid a short circuit occurs.<br />3. Human safety voltage of 24V↔? the wiring process↔? please power off (or wear gloves) operation!<br /><br />Wiring:<br /><br />Positive power supply: Red<br />Negative power: Green<br />Headlight signal: Gray<br />Left turn signal: Orange<br />Right turn signal: White<br />Speed signal: Blue<br />Hall signals: yellow (alternate↔? generally do not take)<br /><br />Display speed adjustments:<br /><br />Because the manufacturers of motor poles↔? tire diameter difference↔? on our board increased the potentiometer (yellow can select devices) calibrated display speed↔? when there are differences between display speed and drive speed ↔?please adjustment potentiometer (As Follows).<br />1. Clockwise = speed<br />2. Counterclockwise = slow down<br /><br />Battery voltage universal knowledge:<br /><br />Ordinary lead-acid battery is the smallest single cell voltage 2V↔? about undervoltage 1.75V↔? be full is 2.4V. for example 48V : under voltage is 42V↔? full power is 57.6V (It has been observed: the actual full power generally only to about 55V).<br /><br />Connection speed lines:<br /><br />Now most electric car motors are brushless motor↔? the speed of the current analog pointer instrument display is driven directly by the motor phases pointer coil produces a magnetic field↔? which in turn indicates the speed↔? it is our company's LCD instrument can also directly access the original meter speed lines on the LCD display speed↔? the motor can also be a Hall signal lines directly connected to the motor and the motor hall leading to the Hall signal line and connect directly to the Hall of a signal↔? the supply of instrumentation↔? thus Calculations show speed↔? no other need for additional Hall sensor.<br /><br />Frequently Asked Questions (must see)<br /><br />1. Q: Why does not light meter plug in to?<br />A: There are two possible<br />First↔? the buyer when the meter is installed↔? there is no order in the line plug replacement (meter may not be the same as six lines on the order and the car)↔? according to the method described in the Internet and then plug in the cable to one correspondence.<br />Secondly↔? some of the original car dashboard car operating voltage is 12V↔? and our instrument operating voltage and the battery voltage is the same (for example↔? a 48V battery↔? the instrument should be connected 48V)↔? positive and negative re looking for a set of power very Jieshang Qu on the line.<br />2. Whether according to the color line to pick?<br />A: No! National standards does not require headlights↔? steering↔? speed must use what color line↔? and now a lot of electric vehicle manufacturers↔? each has a different definition↔? but generally red