Better performance requires better communication. Classic Instruments speed signal interface modules will efficiently convert pulse signals to make sure your instruments and your transmission clearly understand each other.

As a speedometer interface:

Input source options:

* Built-in Vehicle Speed Sensor (VSS) input source
* Three-wire pulse signal generator input source
* Two-wire pulse signal generator input source
* One-wire ECM signals input source

Output:

* 8,000 pulse per mile or 16,000 pulse per mile
* 8,000 ppm cruise output

Additional benefits:

* Three different calibration options
* Input signal can range from 2,000-200,000 pulses per mile
* State-of-the-art signal averaging software that ensures smooth pointer operation, even in fluctuating signal conditions * Noise-reducing, filtered power output for powered speedometer signal generators

As a tachometer interface Input source options:

* High-voltage coil signal input source (typically the negative side of an ignition coil) 0.5-6.0 pulses per revolution (1-12 cylinder engine)
* 5-12 V square wave signal input source from aftermarket ignition box or ECM
* Inductive gear tooth sensor input source, 32-510 tooth range

Output:

* Signal output 12 V square wave, 50 percent duty cycle
* 2, 3, or 4 pulses per revolution (4, 6, or 8 cylinder)
* 3 preset flywheel tooth settings