car wire fire the 12v source
12 Volt Housings

 
12 volt
car stereo
car security
 
 

 

 


Car Security

Door Locks

doorlockswitch

 

Types Of Door Lock Systems

Single Wire

Changes in voltage and /or resistance on one wire to lock and unlock. Opening a circuit to lock and ground a unlock wire. A difference of resistance to 12V or ground during operations.

 

3 Wire Negative

Three wire are used in this application where one wire will show a continuity of constant ground , one will show 12V at rest and ground during activation, one wire 12V at rest and ground during activation.

 

3 Wire Positive

There are three wires in the harness. One wire has constant (+) 12 V DC at all times. Another wire only shows (+) 12 V DC during lock and ground at rest. The last wire only shows (+) 12 V DC during unlock and ground at rest.

 

factory-switch

 

4 Wire Reversal

Four wires are used in this application where one wire will show a continuity of constant 12V, one wire will show a continuity of constant Ground, one will show Ground at rest and 12V during unlock activation, one wire Ground at rest and 12V during lock activation. A third wire reads nothing at rest and 12V during lock activation and continuity to Ground during unlock activation. The fourth wire reads nothing at rest and Ground during lock activation and 12V during unlock activation.

 

5 Wire Alternating 12V

One or two of the wires will show continuity of constant 12V at all times. One or two of the wires will show a continuity of Ground at all times. One wire shows continuity of Ground at rest and 12V during lock activation. One wire shows continuity of Ground at rest and 12V during unlock activation.

 

Vacuum Type

One wire always registers continuity of Ground. One wire always registers continuity of 12V. One wire will register Ground or register 12V when the lock or unlock is activated.

 

vacuum-lock

 

Adding Actuators

Actuators is a method to have power lock features om a vehicle that was not included with the vehicle. Actuators or motor are added to one or more doors and can be control via security or keyless entry system. A switch can be added for extra convenience. Polarity changes on one wire during unlock and on the other wire during lock.

 

door-lock-actuator

 

 

 

 

 

 

 

 


 

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