For selecting a tachometer, what information should I have ready when contacting a distributor or sales rep?

1. You need to know the range in RPM that you want the tach to cover
2. Do you require an electric or mechanical tachometer
3. The point of takeoff for a sending unit (if needed) and it's characteristics (thread size). If a flywheel takeoff is intended the number of teeth on the flywheel must be determined so a programmable tachometer can be programmed.
4. Do you require lighting in the instrument
5. Are you running on a 12V or a 24V system
6. Diameter of the opening the instrument will be mounted in
7. What type of environment will the instrument be used in (eg: highway; high moisture; off-road; stationary equipment; etc)

If you wish to match the style of existing instruments you should also have the following:

1. If your current instruments are a Stewart Warner line, which line (Seaworthy, Heavy Duty Plus, etc) (see the Stewart Warner Products page for the product lines)
2. Bezel color wanted (black, polished, etc)
3. Dial face and graphics (black dial, white numbers, SAE symbols, etc)
4. Pointer type and color (eg: red with black hub)

Installation instructions come with each Stewart Warner tachometer.