ZZ2 ZW-GMLCv2 Advanced Plug and Play Module Owner’s Manual

ZW-GMLCv2

Overview

The ZW-GMLCv2 is an advanced Plug & Play module integration designed for specific GM vehicles equipped with the OE Light Control Module, for flashing OEM lights in wig-wag similar method with a simple press of a button.
This unit comes pre-programmed with various light patterns and has on-board options for disabling specific lights.

Kit Content

ZW-GMLCv2 Module

ZW-GMLCv2 T-Harness

Activation Switch and I/O Harness

Module Connections

1. 22-Pin (power/data connections)
2. LED Status
3. 12-PIN push button I/O harness
4. USB (updates/software info)
5. Dip Switch bank (options)

ZW-GMLCv2 Operation

1. Connect the Z-WAGZ unit to the OE Light Control Module. Follow instructions on page 3 for more details and important information.

2. Turn Ignition ON or start vehicle (Ignition must be on for proper operation)

3. To activate Z-WAGZ:

• Press and HOLD the high beam lever (5 sec) OR
• Press and HOLD the provided push button (3 sec) OR
• Send a 12v (+) signal to the blue wire (designed to be extended for OE up-fitter switches or any aftermarket toggle) NOTE: if using this method to activate, then the only way to deactivate is removing power from the input (or shutting truck down fully) OR
• Press LOCK>UNLOCK>LOCK>UNLOCK quickly on the key fob (ignition is NOT required for this method) NOTE: using this method keeps the lights flashing indefinitely – consider the state of your battery!

Pattern 1 will begin to flash. Once pattern 1 begins, the turn signal indicators in the gauge cluster will blink 1 time then stay solid, indicating Pattern 1 has been selected. The LED on the unit will blink BLUE. See chart on page 4 for remaining pattern color indication.

4. To switch to next pattern: (flashing must be currently active)

• Engage either turn signal, then press and HOLD the high beam lever once more (5 sec). OR
• Press & release the provided push button one time

The turn signals will blink twice (then stay solid) indicating Pattern 2 has been selected. Repeat this process to switch to the next pattern.

5. To deactivate Z-WAGZ:

• Press and HOLD the high beam lever (5 sec) OR
• Press and HOLD the provided push button (3 sec) OR
• Release 12v (+) signal to the blue wire (if connected this way) OR
• Turn vehicle OFF

PLOW MODE will slow the currently selected pattern down, and fully disable High and Low beams from flashing. When INPUT 2 (violet) receives 12v (+) before activating the flasher, PLOW MODE is enabled.

General Z-WAGZ Notes

• Disconnecting the attached 120 OHM resistor from the 2-pin harness is for higher-equipped trims (example: with SuperCruise). If you connect the module and get various cluster errors and/or the vehicle won’t start, let the vehicle sleep (10 mins with driver door open), then remove resistor connection, try again.
• Not all lights on the vehicle are necessarily used, some lights are not controllable via CAN data commands.
• Z-WAGZ will retain the last used pattern, even after being disconnected from the harness (if ever).
• Turn signals, headlights & reverse lights will override pattern flashing when used, until turned off again.
• Lights on the external mirrors will only flash if connected with turn signals.
• For GM trucks, OE fog lights are typically wired together (and therefore only flash together)
• If vehicle is equipped with physical actuators that activate for high beams/low beams, ZZ2 highly suggests disabling that beam from flashing (otherwise mechanical failure may occur quickly)
• ‘Plow Mode’, when active (INPUT 2), disables High & Low beam flashing and slows the pattern down so that the relay box (plow module) can keep up with the flashing (prevents overheating).

ZW-GMLCv2 Installation

1. Make sure the vehicle is fully OFF, with driver door OPEN for 5 full minutes before connecting unit. WARNING: this is vital to avoid tripping a check-engine light.
2. Locate the factory Light Control Module. In all trucks, it is mounted underneath steering wheel / driver’s side kick panel area. The module is mounted right next to the BCM unit and has (5) connectors (see picture, right).
3. With the driver door OPEN & vehicle OFF (for 5 mins minimum): disconnect the violet plug from the lighting module shown. Connect the male side of the provided T-Harness to the OE Light Module and the (removed) plug into the female side of the Z-WAGZ harness. These connectors can only fit in one place, connect in one way and are color matched to the OE plug.
4. Connect the Z-WAGZ unit to the 22-pin connector LAST (if the unit is not connected LAST, you will trip a CEL).
   Tie-wrap the unit to another harness if desired.
5. If wanting to use the optional push button, this can be connected and run to a convenient location for access from the driver. Otherwise, the unit is fully functional from the OEM high-beam lever.
6. If wanting to connect any optional wires provided from the I/O harness, see diagram below.
7. Return to page (2) for operation instructions.

(1) OE GM Light Module

NOTE: New model GM trucks are very temperamental – a data reset may be required during or after the installation of this product. If the vehicle has cluster errors or CELs during installation, shut the truck down, close all doors and lock system, don’t touch for 10 mins. Come back and test again. This may need to happen twice! If the vehicle won’t start with the module installed, verify there are no bent pins on any connector, then remove the attached resistor and perform another data bus reset (off for 10 mins), re-test.

1. Push Button Activation
2. 12v (+) OUTPUT 3 (LEFT)
3. 12v (+) OUTPUT 2 (RIGHT)
4. 12v (+) OUTPUT 1 (when active)
5. 12v (+) INPUT 2 (Plow Mode)*
6. 12v (+) INPUT 1 (Activation INPUT)
7. GROUND OUT (-)
8. I/O HARNESS NOTES:
   – OUTPUTS are 100mA MAX. Do NOT power anything requiring higher current with these outputs! Use relays or connect to trigger inputs only.
   – RIGHT & LEFT OUTPUTS will mirror the OE RIGHT & LEFT lights respectively (when unit is active).
9. OE Lighting Module X4 (Violet) connector
10. Disconnect only for SuperCruise trucks
11. GM Light Control Module (next to SCM)

DIP Switch Settings (software: v1.6)

Located on the back side of the unit is a bank of (6) dip switches – you will need a pick-tool to adjust.

All dip switches are LIVE, do not unplug the module to adjust.

The ZW-GMLC can be activated using the OEM key fob, without the Ignition requirement (all other methods). To activate, while within range of the vehicle, quickly press LOCK>UNLOCK>LOCK>UNLOCK and the flash pattern will begin. Pressing LOCK once more will shut off the low/high beam light (so that they flash). Deactivate the unit by repeating the same process. If you enter the vehicle after the pattern has been activated using this method, the flash pattern will stay active until you disable it (using any method) or shut the vehicle down.

WARNING: Using this method will keep the lights flashing indefinitely. Please consider the condition of your battery ­ although the module is not activating full ignition power (and therefore using far less current), if flashing is left ON, the battery will be actively discharging (it will likely take 1 hour + on a newer, good battery).

SOFTWARE v1.6 NOTES:

– When deactivating the unit, the rear lights may take up to 10 seconds to reset to factory function
– If extra lights emit while brake priority is active (ie, Cadillac), turn DIP 6 ON
– Keyfob activation is now always available (previously on DIP 6)
– Strobe mode is disabled on rear-end when brake is active (see pattern chart)
– If BCM doesn’t respond to turn signal commands, unit will use reverse lights and CHMSL for strobing effect (note: if brake or strobe is disabled via DIP setting, strobe will fully be disabled in this case)

Confirmed Vehicles:

*NOTE: 2023 HD trucks require a visual inspection for the presence of the Lighting Module. 2024 HD trucks are always compatible.

ZW-GMLCv2 LED Status / Patterns [SW: v1.6]

START-UP INDICATION

PATTERN INDICATION

POWER CONSUMPTION / ADDITIONAL SPECS

ZW-GMLCv2 Supported Lights*

FRONT LIGHTS

REAR LIGHTS

*NOTE: As new variants of vehicles are released over time, some lights may not flash due to manufacturer design changes (software or the wiring to the housings themselves). The chart above is accurate for vehicles the ZW-GMLCv2 was tested on.

1080 Holland Drive, Boca Raton, FL 33487 | 929-220-1212

Documents / Resources

ZZ2 ZW-GMLCv2 Advanced Plug and Play Module [pdf] Owner's Manual ZW-GMLCv2, ZW-GMLCv2 Advanced Plug and Play Module, Advanced Plug and Play Module, Plug and Play Module, Module

References

• User Manual