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Central door locking system  

CL-20A 

(CL-20A2) 

 

Description: 

This electromechanical locking system is 

suitable for all cars equipped with 12V voltage 
and a negative ground.  

The set includes two actuators for the front 

doors, two actuators for the rear doors, a 
control unit and a wire harness. An assortment 
of mechanical components for easy installation 
of the actuators to the doors is also provided. 

Model CL-20A2 is a modification for cars 

with only two doors  (it does not include rear 
door actuators). 

The actuator's mechanical output should be 

connected to the mechanical locking system 
inside the door so that it performs the same 
movements as when the locks are operated 
manually.  

The front door actuators are equipped with 

position detectors. The position information is 
processed by the control unit. If there is any 
position change detected, the control unit 
gives instruction to the others actuators to 
make the same position change. This allows 
all door locks to be operated from one point 
(either of the front door locks). 

The control unit can also be connected to a 

remote control. Use only a car alarm or remote 
control unit with “Floating Code” ability. This 
type of system provides a much higher safety 
level than systems with only a fix code.  We 
recommend to combine the central locking 
system with the Jablotron car alarm model CA-
300SP or remote controller model CL-301S. 

 

Specifications 

operating voltage   

10 to 15VDC 

stand by consumption 

max. 0.1mA 

max. working current 

14A 

actuator force 

 

40N 

actuator range 

 

18mm 

reaction time 

 

max. 0.3sec. 

remote control inputs are sensitive to 
negative signals (ground) 

Complies with the essential requirements of: 
89/336/EC 

EMC Directive - Protection 

concerning electromagnetic compatibility 
when is used for its intended purpose.

 

Original of the conformity assessment can be 
found at the web page 

www.jablotron.cz

section Technical support.

 

 

Installation 

Mechanical installation of actuators to some 

car models can be complicated. Therefore we 
recommend professional installation. 

The actuators must be installed in such a way 

that the actuator movement axis  is the same 
as the movement axis of the moving door lock. 
The actuators with five wires are for the front 
doors.  Actuators  with two wires are for the rear 
doors. After actuator installation, check by hand 
that the locks can move easily and smoothly.  

Before you install the control unit, disconnect 

the car battery. Then,  remove the fuse from 
the holder on the wire harness provided with 
the system. Keep in mind that if your car has 
some memory functions built in, then these 
may be erased if you disconnect the battery. 
Refer to the car owners' manual before 
disconnecting the battery. 

Install the control unit in the passenger 

compartment. The recommended location is 
under the dash board. 

 

Route the wire harness cables to each door.  

Be sure that the cables will not be broken when 
opening or closing the door. The end of the 
cables are equipped with connectors: connect 
the wires so that the colors  corresponds. 

If  one or more of the door locks require an 

opposite movement of the actuator for locking, 
substitute the blue wire of the corresponding 
actuator for the green wire. In the case that it is 
front door actuator, you also have to substitute 
the brown wire for the white wire. 

 

Positive Supply - The red wire with a fuse 
holder (15A) should be connected directly to 
the positive terminal of the battery cable. 

 

Grounding - connect the black wire to the 
original GND point in the car. Do not use any 
temporary grounding. 

Centrl door locking system CL-20A 

2/2 

MBY51300 

 

Remote control - the white colored wire with 
blue stripe (unlock) and the white colored 
wire with black stripe (lock)  are inputs for the 

remote control. They are sensitive to 
negative potential (connection with ground).  
If you are going to connect CL-20A with a 
remote control, do it after completing the 
installation of the locking system and after 
testing. If you do not want to use remote 
control inputs, you can remove the wires 
from the flat connector by pressing the 
corresponding tab on the side of connector 
body and pulling  the wire out. 

Plug the flat connector into the control unit. 

Be sure that the connector is properly 
positioned and oriented. Check the wiring 
and then install the fuse on the red cable 
(15A) and connect the battery. 

Check the function of the locking system 

by using the key  in the front door locks. If 
any of the front door locks do not trigger the 
function of the others, check position of the 
corresponding actuator. The moving part of 
the actuator must be adjusted in such a way  
that when you lock or unlock with the key, the 
moving part is centered in the middle of its 
possible movement trajectory. 

 

The fifth door 

It is also possible to control a fifth door 

lock, if you install an extra actuator there. 
Use model CM-2 (two wires) and connect it 
parallel to one of the front door actuators. 
This way the locking system can only be 
operated from the front doors.  

If you install model CM-5 (five wires), you 

can also control the system with a key in the 
fifth door lock. 

 

Note: study the function of the fifth door lock 
carefully before you decide to install an 
actuator. Some systems do not allow it. 

 

Maintenance 

The system does not need any special 

maintenance. Occasionally check if the locks 
can be operated easily by hand from time to 
time. Lubricate the locks before and after each 
winter season.  

 If a lock freezes in winter, or is mechanically 

blocked for any reason,  remove the control unit 
fuse to avoid damage to the actuator. 

 

 

Note:

 Although this product does

not contain any harmful materials
we suggest you to return the
product to the dealer or directly to
the producer after usage.

 

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