Magalarm MEGA 2550 Installation Manual - page 4
Keep wiring away from moving engine parts, exhaust pipes, and high-tension cable. Tape wires that pass
through holes on the firewall to prevent frying electrical. Watch out for sharp edges that may damage wires
and causes short circuit.
CAUTION: Do not connect the wire harness to the control module until all wiring to vehicle is complete.
H1. MAIN 5 PIN WIRE HARNESS:
H1/1. Red / White Wire – Parking Light Relay Input –
The RED/WHITE wire is the input to the flashing parking light relay. The connection of the RED/WHITE
wire will determine the output polarity of the flashing parking light relay.
If the vehicle you are working on has +12volt switched parking light, you do not need to connect this wire.
This wire already is connected to +12volt.
If the vehicles parking light is ground switched, cut the RED/WHITE wire and connect the RED/WHITE
wire to chassis ground.
H1/2. White Wire – Parking Light Relay Output (+12 V 10A Output) –
Connect the WHITE wire to the parking light wire coming from the headlight switch. Do not connect the
WHITE wire to the dashboard lighting dimmer switch (Damage to the dimmer will result). The limitation of
the WHITE wire is 10 Amps max. Do not exceed this limit or damage to the alarm and parking light relay
will result.
H1/3. Black Wire – System Ground –
This is main ground connection of the alarm module. Make this connection to a solid section of the
vehicle frame. Do not connect this wire to any existing ground wires supplied by the factory wire loom.
Make the connection to the vehicle's frame directly.
H1/4. Brown Wire – Siren Drive or Horn Output –
(Set Feature
III – 2
Programming)
SIREN DRIVE OUTPUT (Factory default setting)
This is the positive (+) output connection for the siren. Current capacity is 2 Amps. Make connection to
the (+) red wire from the siren. Make the (-) black wire coming from the siren to a good chassis ground.
(+) Low Current HORN OUTPUT -- (Set Alarm Feature III – 2 To Horn Output)
This wire is provided to use the existing vehicle's horn as the alarm system's optional warning audible
device. It is a transistorized low current output, and should only be connected to the low current positive
(+) output from the vehicle’s horn switch.
H1/5. Red wire – System Power (+12V Constant) –
The RED wire supplies power to the system. Connect this wire to a constant +12 volt source.
H2. 3-PIN BROWN CONNECTOR FOR OPTIONAL PAGING (KNOCK) SENSOR
An optional Paging (Knock) Sensor can be added on.
1. Detach the protective paper from the double-sided adhesive tape and attach one side of the
double-sided adhesive tape to the bottom part of the Paging (Knock) Sensor.
2. After cleaning the area around the left bottom part of the front windshield so that it stays attached
firmly, the Paging Sensor should be attached on the front window so that the side on which a sticker
with a printed words “Tap Here Paging Driver” is attached face outward.
3. Hide the wire by carefully pushing it inside the space of the front windshield’s mold trim.
Adjust the sensitivity of the Paging Sensor. If you turn the tuning screw at the center of the Paging Sensor
clockwise, the sensitivity goes sharp (higher) and if turned counter-clockwise, the sensitivity goes dull
(lower).
H6. 4 PIN ORANGE CONNECTOR FOR 2 STAGE SHOCK SENSOR
4. Green Wire / Warn Away Input
3. Blue Wire / Zone 4 Ground Trigger
2. Black Wire / Negative
1. Red Wire / +12Volts
H7. BLACK 4-PIN CONNECTOR. –
TWO-WAY TRANSCEIVER/ANTENNA MODULE
The Two-way transceiver/antenna mounts on the location above the belt line (dashboard) of the vehicle
for best reception. We suggest you mount it on the lower left or upper left-hand side of the windshield.
Warning! Do not mount in such a manner that it obstructs the driver’s visibility.
- Remove the protective tape backing.
- Carefully align the two-way transceiver/antenna and apply to windshield.
- Route the black connector wire behind the trim and connect to the two-way transceiver/antenna.
- Connect the other end to the control module.
- Special considerations must be made for type of windshield glass, as some newer vehicles utilize a
metallically shielded or infrared and UV radiation absorbing window glass that will inhibit or restrict RF
reception. In these vehicles, route the two ways transceiver/antenna module away from metallic
MEGA 2550 INSTALL
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