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PRODUCTS
Racer Gauge DIN-Gauge Meter Hood & Option Defi-Link Meter BF  
ADVANCE ZD ADVANCE CR ADVANCE BF ADVANCE Control Unit ADVANCE ZD CSP

If you believe that the product is not working correctly, please check to see if it has been installed correctly before contacting us.
Is the fuse burned out?
Does the battery supply 12V to IGN when the ignition is on?
Are the engine revolution speed and vehicle speed displayed correctly?
Are the control unit and the display unit connected correctly?
Is there anything loose connections?
Has the unit been set correctly for the number of speed pulses for the vehicle's ECU and for the number of cylinders?
Does your engine have an aftermarket or non-OEM computer?
Does your vehicle have a speed governor release equipment?
Restart the vehicle and check the operation of the product.

PROBLEM
CHECK THE FOLLOWING
There is no display. *Are all the wires connected properly?
*Are the connections tight?
*Is the GND wire properly connected?
Strange values are displayed. *Are all the wires connected properly?
*Is the tire size standard to the vehicle?
*Is your vehicle model compatible with the product?
Strange values are displayed and the instrument fails to function properly. *It is possible that the computer inside the product may be malfunctioning due to a radio frequency interference in your vehicle. Restart the vehicle and check its operation again.