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Accessory Wiring Harness - DLS Port
(Red 4-Pin Connector)
Plug-In DLS Power Doorlock Interface Port:
The Red 4 pin port on the
system's control module produces a negative pulse output for locking the doors, a
constant 12 volt pin for the optional relay coils only, a first negative pulse output
for driver door unlock, and a second negative pulse output for unlocking all other
doors. Do not plug the Red doorlock connector into the White sensor port.
3 Wire Negative Pulse Systems
are typically indicated by the presence of
three wires at the switch. Of these, one will show constant ground, regardless of
whether the switch is being operated or not (at rest); one will show ground when the
switch is pushed to the "lock" position, and the other wire will show ground when
the switch is pushed to the "unlock" position. With the switch at rest, these two wires
will read voltage, usually 12 volt positive but in some cases less. The wires from the
switches operate doorlock relays or a doorlock control unit with built-in relays;
make the connections between the switches and the relays.
CONNECTION:
The included harness (DLP-N4) can allow direct connection
between the security system and a 3-Wire Negative Pulse system. If more than the
500mA Ground output that the security module can provide is required, use the
optional model DLS and two relays. When driver's door unlock priority is desired,
use the optional DLS-3.
3 Wire Negative
Doorlocks using
the Control Unit
Outputs
Door
Motors
Green wire to
Switch Lock wire
Blue wire to
Switch Unlock wire
Vehicle's Doorlock
Relay Control Unit
Doorlock Switch
Unlock
Lock
Pink Wire is not used
Ground
DLP-N4 harness (included) Red
connector plugs into the
control module’s Red DLS port
The vast majority of power doorlocks are found as three system types: 3 wire
negative pulse, 3 wire positive pulse and 5 wire reversal, rest at ground. Other power
doorlock systems which may be encountered are the vacuum pump types found in
older Mercedes vehicles and the single wire, dual-voltage which has appeared in
some late model vehicles. The best way to identify a doorlock system is to examine
the doorlock switch's wiring.
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The two later wires are both routed to the doorlock actuators and are connected
to either end of the actuator's motor winding. When the switch is pushed to one
position, one of these two wires will have 12 volts. This voltage flows through the
wire to the actuator's motor winding, and since the other wire is still resting at
ground an electrical circuit is completed. When the switch is pushed to the opposite
position the electrical flow is reversed.
Once determined, the correct wires must be cut. Notice in the diagram that the
driver's switch is the primary switch and referred to as the "switch" wires. The wires
that go to the secondary switch are referred to as the "motor" wires. Even though
the cut is made between the switches, the two sides are still correctly called the
"switch" and the "motor" sides, with consideration of "Primary" and "Secondary"
switch.
Both Excalibur models feature backup battery capability. Included with each is
a slide-on clip mounting bracket and a snap-cap wiring harness for an optional
alkaline 9 volt battery. If the alkaline 9-volt battery is used, it should be replaced
with a fresh battery about every year for best system backup performance.
Also available is an optional rechargeable battery pack, which if used would be
a permanent backup power supply, not requiring occasional replacement.
Backup Battery Port, Harness and Bracket
(White 2-Pin Connector)
To add the backup battery feature:
1)
Assemble the backup pack (instructions are with the bracket and harness)
with an optional alkaline 9-volt battery, slide the assembly onto the alarm
control module, and then plug the 2-pin wiring harness into the White 2-pin
port on the module.
OR
2)
Or if the optional rechargeable pack is chosen (part no. BATPACK-R), it is
pre-assembled and be attached to the alarm control module in the same
fashion, by sliding it onto the control module. Insert the battery pack’s 2-
pin plug into the alarm’s White backup battery port, and connect its remain-
ing single Red wire directly to Constant (+) Positive 12 volts.
Install the included impact sensor according to the instruction sheet included
with it, and then plug its wiring harness into the alarm control module’s White 4-
pin port (be cautious to not plug the White sensor connector into the Red DLS
doorlock output port).
Sensor Port
(White 4-Pin Port)
