2 STEP DOOR UNLOCK WIRE CONNECTION FOR
5 WIRE ALTERNATING DOOR LOCKS
+12V
Cut the Existing
Lock Wire
Green / White
Blue / Red
Green / Red
Cut Existing Unlock
X
Blue / White
Cut the Unlock Wire
Lock
Unlock
OEM Door Master Lock
OEM Slave
Door Lock
Switch
+12V
Lock
Unlock
To All Other
Door Lock
Motors
LT. Green /
Black Wire
x
X
OEM
Door Lock
Motor
Blue / Yellow
Green / Yellow
+ 12V
+ 12V
85
86
87
87A
30
H4
6-Pin
Door
Lock
Wire
Harness
VACUUM OPERATED DOOR LOCKING SYSTEM:
TYPICAL OF MERCEDES BENZ AND AUDI.
Locate the wire under the driver's kick panel. Use the
voltmeter connecting to ground, verify that you have th
correct wire with the doors unlocked, the voltmeter will
receive "12 volts". Lock the doors and the voltmeter wi
read "0 volt". Move the alligator clip to +12V and the
voltmeter will receive "12 volts". Cut this wire and mak
connections. Be sure to program door lock timer to
3.5 seconds. (See Feuture
II – 1
Programming.)
2 STEP DOOR UNLOCK WIRE CONNECTION FOR
GROUND SWITCHED DOOR LOCKS
Cut Existing Unlock
X
Lock
Unlock
OEM Door Master Lock Switch
To All Other
Door Lock
Motor
LT. Green / Black
Wire
OEM
Door Lock
Motor
Blue / White
Green / White
Green / Yellow
Existing
Lock Wire
Existing
Unlock Wire
H4
6-Pin
Door
Lock
Wire
Harness
Blue / Red
Blue / Yellow
+12V
OEM Door
Lock Relay
2 STEP DOOR UNLOCK WIRE CONNECTION FOR
POSITIVE SWITCHED DOOR LOCKS
Cut Existing Unlock
X
Lock
Unlock
OEM Door Master Lock
To All Other
Door Lock
Motors
LT. Green /
Black Wire
OEM Driver's
Door Lock
Motor
+ 12V
Blue / Red
Existing Pos.
Lock Wire
Existing Pos.
Unlock Wire
30
87A
87
86
85
+12V
Blue / White
Green / White
Green / Yellow
Blue / Yellow
+ 12V
OEM Door
Lock Relay
H4
6-Pin
Door
Lock
Wire
Harness
PROGRAMMING
A. THE TRANSMITTERS:
Note:
This mode will only retain the last 4 remote transmitters programmed. If the transmitter memory is
exceeded, the security system will start deleting transmitters from the memory in chronological order.
1. Turn the Ignition switch ‘OFF/ON’ 3 TIMES and stay in the ON position. Within 15 seconds.
2. Push the Valet switch
3
times and holding in on
3rd
push until a long chirp is heard. Then release the
valet switch. You are now in the Transmitter programming mode.
3. Press and hold any button of the transmitter until the siren responds with a confirming chirp, indicating
the signal has been stored into memory.
4. If you have additional transmitters (up to 4) that need to be programmed, repeat step 3 for each
transmitter.
Exit:
Turn Ignition to 'OFF' position, or leave it for 15 seconds. 3 long chirps & 3 parking light flashes will
confirm transmitter programming exit.
MEGA 2550 INSTALL
7
