|You have just finished the
installation ofyour new Auto Meter Air/Fuel Ratio gauge, and it is almost sundown. You take your vehicle out for a'test drive to ensure all is well with the install and the gauge is working as it should. The sun has now set and you turn your lights on but the AN Ratio gauge remains dark, except for the LEDs that are dancing back and forth.
|• Obviously, you do not want to break
traction, as that will also adversely
affect the calibration.
• The load (weight) of the vehicle plays
into the diameter of the tires, too, so be
sure to have an average load in the
vehicle during calibration.
Connections to various vehicles
We offer two styles of senders;
1. #5291 fits most GM and most Chrysler vehicles that may have previously used a cable. Both vehicles share the same size speedometer cable connector (7/8" - 18 THD). Double check to make sure this thread will match what you have on your transmission, to ensure compatibility.
2. #5292 fits most Ford transmissions that have cable outputs, and utilize a retaining "clip" to mount the cable/sender to the housing of the transmission.
Both senders will replace the existing cable, or attach to the cable output of the transmission and produce a signal to drive the speedometer. Most later model transmissions without a cable can use our speedo too.They get the signal DIRECTLY from theVSS (vehicle speedo sensor), NOT from the computer. The signal after the computer is buffered (conditioned) and our speedos will not recognize that type of signal. Connect the speedo directly to the wire that sends the raw signal from the VSS. Finding the signal wire is usually quite simple. The signal wire will produce anywhere from 2V up to 120V DC peak to peak. This can be tested with a standard multimeter (the voltage should increase with the vehicle speed). Otherwise, you can look in a service manual for the signal wire, or if you can't find it anywhere, contact us and we'll see if we have the information.
Once everything is installed (both wiring and the speedometer) you can calibrate the speedo. A pushbutton is included for the calibration steps, as described in detail in the instructions.The following is a quick review of the steps. • Turn off the vehicle if it is on or running.
• Press and hold the button.
• Start the vehicle.
• Once the vehicle is running, release the
button (the pointer should go to the
highest MPH reading).
• Drive to the beginning of your carefully
measured 2mile distance, and stop.
• Press the button again (the pointer should go to half the maximum MPH
reading).The speedo is ready to be
• Drive the two miles and stop.
• Press the button