Dakota Digital OBD II tachometer/speedometer interfaces are designed to plug directly into the OBDII diagnostic connector, providing a user-adjustable traditional speedometer, tachometer and check engine output for your choice of aftermarket instruments.Features include:* User selectable output of: 4k, 8k, 16k PPM signals, Sine or Square wave options * +/-35% speed signal correction, compensating for tire size or gearing changes* Adjustable 4, 6 or 8 cylinder tachometer signal output* Check engine light output provides a grounded (-) output to activate a check engine light of your choice*Automatically calibrated output for an aftermarket cruise control can be activated by making connection to the higher-resolution fixed VSS sensor

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