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How to test a relay
Consult the relay schematic or data sheet.
Relays have fairly standard pin configurations, but it is best to search for the data sheets to find out more about the number of pins from the manufacturer, if available. Typically, these will be printed on the relay.

OPTIONS:
-Once you've identified the pin configurations, you can measure the number of pins for each relay. Pin configurations contain multiple variables while timing materials tend to differ considerably so you will have no estimate..
-Identify the thread lengths that will make up the relay before you begin. The thread lengths is based on the number of pins in the relay..
-At most relay models , 90 percent of the buttons or frequencies shown in the relay form are marked as the pins of the relay. Find out more about the threads that records data..
-Information on current and voltage ratings, pin configurations, and other information is sometimes available in the datasheets will be invaluable in testing, and eliminate most errors associated with testing. Testing pins randomly without knowing the pin configuration is possible, but if the relay is damaged, results may be unpredictable... The answer should be
Information on current and voltage ratings, pin configurations, and other information is sometimes available in the datasheets will be invaluable in testing, and eliminate most errors associated with testing. Testing pins randomly without knowing the pin configuration is possible, but if the relay is damaged, results may be unpredictable.