Standard Voltage-Driven Tachometers

This is the type of tachometer most often used. These tachs are typically connected to the (-) terminal of the coil. The Tachometer Tester "Norm" terminal outputs a 12v signal similar to TachMatch and MSD. Some tachometers need the inductive kick from the coil to operate properly. For these, the "V-Boost" terminal provides the higher-voltage spike necessary. An example of tachomers requiring the extra voltage are VDO tachometers. By trying a tachometer on both of these terminals, you will know whether the tachometer requires the pulse.

Current-Driven Tachometers

This type of tachometer, used on Smiths RVI units, some of the '60's era Fords, and many of the early Datsuns can normally be identified by a loop in a wire near the back of the tachometer. They are normally connected between the ignition switch and the (+) terminal of the coil.

"Vintage" Tachometers

This type of tachometer uses an interface box (such as the Sun EB-seres) between the ignition system and the tachometer head. These tachometers have just two terminals on the back, labeled (+) and (-). The Tachometer Tester can drive these tachometers without the interface box. A TachMatch can be used to replace (or be installed within) the original interface box.

What won't it test?

The Model TT-01 will not work on CAN-bus tachometers. Also, it will not work on tachometers that use a "puck"-type interface box, such as the Stewart Warner 760 series - if you need support for this type of tachometer, contact the Accutach Co. in San Jose.

More Detailed Information...

Refer to the instruction manual for specifications, limited-warranty, return policy and more details about operation.

The Tachometer Tester can be shipped with either a US or Euro power pack at no additional charge. Unless notified otherwise, it is shipped with the US plug. Also available, at additional cost, is internal battery power that allows the tester to be used in places with no AC power. For example if you decided to take it to a swap met.