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Relays Diagrams / Converting Polarity

Converting Polarity:
Negative Output to a Positive Output
Positive Output to a Negative Output
top of page Convert a Negative Output to a Positive Output
If you have a switch or an alarm or keyless entry that has a negative output that you wish to use to switch a device that requires 12V+ such as a horn, dome light, parking lights, head lights, hatch release, etc., wire a relay as shown below to convert the negative output (trigger) to a positive output.
Convert a Negative Output to a Positive Output

Here's the same configuration showing a negative output from an alarm or remote keyless entry used to activate a trunk release solenoid that requires 12V+ to release the trunk.
Convert a Negative Output to a Positive Output
top of page Convert a Positive Output to a Negative Output
If you have a switch or an alarm or keyless entry that has a positive output that you wish to use to switch a device that requires a ground such as a horn, dome light, parking lights, head lights, hatch release, etc., wire a relay as shown below to convert the positive output (trigger) to a negative output.
Convert a Positive Output to a Negative Output

Here's the same configuration showing a positive output from an alarm or remote keyless entry used to activate a vehicle's parking light relay that requires a ground to turn the lights on.
Convert a Positive Output to a Negative Output
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Converting Polarity
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