Single terminal motor question....


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Old 10-21-14, 09:59 PM
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Single terminal motor question....

Hello,

I am designing and building a heating system for a classic vehicle. I purchased a single terminal motor to use for the heater blower fan. My question is: since there is only one terminal on the motor I am assuming that it is "positive" and that running a wire from the metal motor platform to the chassis/frame will complete the circuit.

Hopefully, someone who has experience with these motors can confirm or correct my assumption.

Thank you for your help.
 
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Old 10-21-14, 11:32 PM
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Welcome to the forums.

Your assumption is correct.
The metal shell of the motor is negative and the connection post is your positive connection.
 
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Old 10-21-14, 11:52 PM
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Thank you and thank you!

I appreciate you taking the time to answer my question.

Best regards.
 
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Old 10-22-14, 12:15 AM
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You're welcome and good luck with the project.
 
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Old 10-22-14, 01:41 AM
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A lot of auto electric things (motors, ignitions systems etc)are built that way, The medal is ground, newer cars with computers sometimes have ground wires.
 
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Old 10-22-14, 03:45 AM
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Except that, depending on what you have, you need to confirm that your vehicle has a negative ground, rather than positive ground.
 
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Old 10-22-14, 04:44 AM
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If the motor you purchased was originally designed for a + ground vehicle then your assumption would be wrong.

Hook it up to a battery and see if it rotates in the direction that you want. Question would then be answered.
 
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Old 10-22-14, 08:34 PM
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Thank you....

Thank you to all who responded....I do appreciate your help.
 
 

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