How-to-guides - Relay applications

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, 3^rd 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.