Please check the questions below to see if your question can be answered here. If you don't find the answer you are looking for you may contact your nearest distributor or Stewart Warner Technical Support at techsupport@stewartwarner.com for assistance (Ph: 915-791-0005 ext 154 Fax: 915-791-0114). Please include your phone number in case our tech support needs additional information. Your number will only be used to contact you about your questions.

Notes: Some questions may be repeated if they apply to more than one category. Answers will open in a new window.

General (top)

1. Where do I return product for Warranty replacement?
2. Why doesn't my gauge/meter return to zero (RTZ) when the power is off?
3. Where can I view wiring diagrams for instruments before purchasing them?
4. Where can I view dimensions of instruments, senders and hourmeters before purchasing them?
5. Will my sender operate two electric gauges?
6. Can I mix Stewart Warner gauges with senders of another make, or vice versa?
7. Will Stewart Warner repair my gauge/meter?

Gauges (top)

1. How can I install 12-volt instruments on a 24-volt DC electrical system?
2. Can I mix Stewart Warner gauges with senders of another make, or vice versa?
3. Why doesn't my gauge/meter return to zero (RTZ) when the power is off?
4. How do I check my mechanical pressure gauge?
5. How do I check my mechanical temperature gauge?
6. My (electrical) temperature gauge is not working or shows the wrong temperature.
7. Can I damage the instrument if I miswire it?
8. For selecting a pressure gauge, what do I need to know before contacting a distributor or sales rep?
9. For selecting a temperature gauge, what do I need to know before contacting a distributor or sales rep?
10. For selecting a fuel gauge, what do I need to know before contacting a distributor or sales rep?
11. For selecting a bow trim gauge, what do I need to know before contacting a distributor or sales rep?
12. Where can I view wiring diagrams for instruments before purchasing them?
13. Where can I view dimensions of instruments, senders and hourmeters before purchasing them?
14. Will Stewart Warner repair my gauge/meter?

Tachs/Speedos (top)

1. My electric tachometer is not reading correctly. What can I do?
2. Why doesn't my gauge/meter return to zero (RTZ) when the power is off?
3. How do I check to see if my mechanical tachometer or speedometer is functioning?
4. How do I check the accuracy of a mechanical speedometer?
5. How do I check the accuracy of a mechanical tachometer?
6. My mechanical tachometer or speedometer is seized (cannot be rotated).
7. Can I damage the instrument if I miswire it?
8. Where can I obtain a hand held mechanical tachometer?
9. Where can I view wiring diagrams for instruments before purchasing them?
10. Where can I view dimensions of instruments, senders and hourmeters before purchasing them?
11. For selecting a tachometer, what information should I have when contacting a distributor or sales rep?
12. For selecting a speedometer, what information should I have when contacting a distributor or sales rep?
13. Will Stewart Warner repair my gauge/meter?

Hourmeters (top)

1. For selecting an hourmeter, what do I need to know before contacting a distributor or sales rep?
2. Where can I view wiring diagrams for instruments before purchasing them?
3. Where can I view dimensions of instruments, senders and hourmeters before purchasing them?

Ammeters & Voltmeters (top)

1. Why doesn't my gauge/meter return to zero (RTZ) when the power is off?
2. Do I need a shunt for an ammeter?
3. Do I need a sender for use with a voltmeter?
4. Can I damage the instrument if I miswire it?
5. Where can I view wiring diagrams for instruments before purchasing them?
6. Where can I view dimensions of instruments, senders and hourmeters before purchasing them?
7. Will Stewart Warner repair my gauge/meter?
8. For selecting an ammeter, what do I need to know before contacting a distributor or sales rep?
9. For selecting a voltmeter, what do I need to know before contacting a distributor or sales rep?

Pyrometers (top)

1. What does a pyrometer do?
2. For selecting a pyrometer, what information should I have when contacting a distributor or sales rep?
3. What is the minimum voltage required for a pyrometer?

Senders/Switches (top)

1. What is the difference between a sender and a switch?
2. Will my sender operate two electric gauges?
3. Can I mix Stewart Warner gauges with senders of another make, or vice versa?
4. For selecting a fuel sending unit, what do I need to know before contacting a distributor or sales rep?
5. For selecting a pressure sender, what do I need to know before contacting a distributor or sales rep?
6. For selecting a temperature sender, what do I need to know before contacting a distributor or sales rep?
7. For selecting a temperature switch, what do I need to know before contacting a distributor or sales rep?
8. For selecting a pressure switch, what do I need to know before contacting a distributor or sales rep?
9. For selecting a vacuum switch, what do I need to know before contacting a distributor or sales rep?
10. How do I determine the ohms of my current fuel sender?
11. My tank is between 6" and 12", what fuel senders are available?
12. My tank is between 10" and 24", what fuel senders are available?
13. Where can I view wiring diagrams for instruments before purchasing them?
14. Where can I view dimensions of instruments, senders and hourmeters before purchasing them?
15. Do I need a sender for use with a voltmeter?

Installation (top)

1. Where can I view wiring diagrams for instruments before purchasing them?
2. Where can I view dimensions of instruments, senders and hourmeters before purchasing them?
3. Will my sender operate two electric gauges?
4. Can I mix Stewart Warner gauges with senders of another make, or vice versa?
5. Do I need a shunt for an ammeter?
6. Do I need a sender for use with a voltmeter?
7. How can I install 12-volt instruments on a 24-volt DC electrical system?
8. My (electrical) temperature gauge is not working or shows the wrong temperature.
9. Can I damage the instrument if I miswire it?
10. My electric tachometer is not reading correctly. What can I do?

Specifying/How to's (top)

1. For selecting a speedometer, what information should I have when contacting a distributor or sales rep?
2. For selecting a tachometer, what information should I have when contacting a distributor or sales rep?
3. For selecting a pyrometer, what information should I have when contacting a distributor or sales rep?
4. For selecting a fuel sending unit, what do I need to know before contacting a distributor or sales rep?
5. For selecting a pressure gauge, what do I need to know before contacting a distributor or sales rep?
6. For selecting a temperature gauge, what do I need to know before contacting a distributor or sales rep?
7. For selecting an ammeter, what do I need to know before contacting a distributor or sales rep?
8. For selecting a fuel gauge, what do I need to know before contacting a distributor or sales rep?
9. For selecting a bow trim gauge, what do I need to know before contacting a distributor or sales rep?
10. For selecting an hourmeter, what do I need to know before contacting a distributor or sales rep?
11. For selecting a pressure sender, what do I need to know before contacting a distributor or sales rep?
12. For selecting a temperature sender, what do I need to know when contacting a distributor or sales rep?
13. For selecting a temperature switch, what do I need to know before contacting a distributor or sales rep?
14. For selecting a pressure switch, what do I need to know before contacting a distributor or sales rep?
15. For selecting a vacuum switch, what do I need to know before contacting a distributor or sales rep?
16. For selecting a voltmeter, what do I need to know before contacting a distributor or sales rep?

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