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How-to-guides - Relay applications

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Starting the Installation of your car security system

 

 

Things to do with relays.

While there are hundreds of uses for the relay, we have illustrated several for the automotive electronic accessories segment.

 

 

 

Relays

Index               

 

Introduction

 

Relay aplacations-1

 

Relay aplacations-2

 

 

 

   

Relays in action

 

Weather you installing power door locks or adding remote trunk release, these diagrams show simple laminas terms and illustrations that make reproduction of any circuit a breeze.

Change (-) Negative to (+) Positive

 

The diagram below shows how to change a (-) Negative Pulse to (t+ Positive using one Single Pole Double Throw (SPDT) relay.  Example:  This relay configuration can be used to change (-) negative door lock output of an alarm to Positive fro a Positive door lock circuit, or to change (-) Trunk release output to Positive for a Positive trunk release circuit.  This configuration can also be used to change a vehicle’s (-) Negative circuit to (+) Positive for use by the alarm.

 

 

 

 

 

 

 

Change (+) Positive to (-) Negative

 

The diagram above shows how to change a (+) Positive Pulse to (-) Negative using one Single Double Throw (SPDT) relay.  Example:  This configuration can be used to change a Positive siren output to (-) Negative for use on a vehicle’s Horn circuit, to change an alarm’s Positive flashing light output to Negative for use on vehicle’s which require a Negative Pulse to operate the parking lights, or can be used to change a vehicle’s Positive door trigger to (-) Negative

 

 

 

 

 

 

 

 

 

 

Change small Amperage (+)

Positive to Stronger (+) Positive Output

 

The diagram above shows how to change a small amperage (+) Positive Pulse output to a stonger, high Amperage Positive Pulse output using one Single Pole Double Throw (SPDT) relay.  Example:  This configuration can be used to “step-up” the siren output of an alarm to power extra sirens.  This configuration can also be used to “step-up” the flashing light output of an alarm to stronger amperage to flash the headlights in the vehicle instead of the parking lights.

 

 

 

 

 

 

 

 

Change small Amperage (-) Negative to Chassis Ground

 

The diagram above shows how to change small Amperage (-) Negative Pulse output to a Chassis Ground Pulse output using a Single Pole Double Throw (SPDT) relay.  Example:  This configuration can be used to “step-up” the 250 ma. (-) Negative door lock, trunk release, 3rd channel, or starter interrupt outputs of the alarm to operate circuits which require chassis ground, or to “step-up” the ground to be able to operate more circuits.

 

 

 

 

 

 

 

 

Chirp Siren from (-) Negative Pre-warning output of Dual Zone Sensor

 

 

The diagram above shows how to use the (-) Negative Pre-Warning output of a Dual Zone Sensor in conjunction with a Single Pole Double Throw (SPDT) relay, and a 1 or 2 Amp Diode, to pulse the siren of an alarm in the event of a Pre-Warning intrusion.  Example:  This configuration can be used to add a single audible Pre-Warning chirp to an alarm which does not offer a 4-Pin Auxiliary input or an alarm which does not offer any Pre-Warning input.

 

 

 

 

 

 

 

 

Disclaimer

Mobile Information Labs assumes no responsibility with regards to the accuracy or currency of this information.  Proper installation in every case is and remains the responsibility of the installer. MIL, assumes no liability or responsibility resulting from an improper installation, even in reliance upon this information.

 

 

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