Electronic Ratio Adapter Speedometer Signal Interface (Universal; Some Adaptation May Be Required)
Item EK-61-922830
Eckler's no longer carries the Electronic Ratio Adapter Speedometer Signal Interface (Universal; Some Adaptation May Be Required).
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If you have changed the tire size and/or transmission in your vehicle, the speedometer will become inaccurate. The ERA will correct this issue sending the correct speed signal to their speedometer.