GAS ENGINE IGNITION MODULE
GS12 Ignition Module
A robust, solid-state inductive ignition module for gas engines from 1 to 12 cylinders, with up to 3,000 microseconds of continuous spark duration.
GS12 is the largest module in the range, for engines of all horsepower and sizes, low or high speed, with up to two coils per cylinder. Timing can be adjusted globally, by individual cylinder or with five load-input maps, set up in the free Windows-based software.
1 to 12 cylinders
Up to two coils per cylinder
Up to 3,000 µs spark
Continuous spark duration
Flexible timing
Global, per cylinder or five load maps
IP67 rated
Rugged control unit
WHERE IT SITS
GS12 in the gas engine controls range
THE DIFFERENCE
What makes the GS12 different
GS12 has the widest cylinder coverage in the range. It shares spark duration, timing maps, software and features with GS8, and adds trigger options for more engine types, including A3 and A5 conversion kits, the GM distributor timing kit, drilled flywheel patterns for wasted spark on 4-stroke engines, and 2-stroke engines.
SPECIFICATION IN BRIEF
What the GS12 provides
SPECIFICATION
Full specification
Figures from the GS12 Ignition Module datasheet, issue 2. Confirm the current issue before ordering.
Ignition
| Number of cylinders | 1 to 12 |
|---|---|
| Spark duration | 500 to 3,000 µs continuous spark duration |
| Timing | Global, individual cylinder, dual fuel |
| Timing maps | 2D (speed and timing) or 3D (speed, timing and load) with 5 maps |
| Trigger methods | Single pickup, existing OEM disc and pickup, A3 or A5 conversion kit, GM distributor timing kit, drilled flywheel pattern for wasted spark on 4-stroke, or 2-stroke engines |
| Coils | Up to 2 coils per cylinder |
Application
| Engines | All horsepower and engine sizes, low speed or high speed |
|---|
Power and interface
| Power | 12 / 24 V DC, 5 A |
|---|---|
| Communications | RS232, DB9 female connection |
| Outputs and features | Tach output signal, shutdown ground, fuel valve sequencing |
| Status indication | 3 integrated LEDs confirming correct operation |
Software
| Software | Free Windows-based set-up software, with multi-level security from basic to advanced |
|---|---|
| Programming | Configuration files can be set up, saved, sent and stored, or emailed |
| Logging | Verification and troubleshooting logs that can be emailed to Gill support for review |
Environment
| Operating temperature | -40 to +90 °C |
|---|---|
| Ingress protection | Sealed to IP67 |
| Maximum speed | 4,000 rpm |
COMPARE
GS12 against the other ignition modules
| GS12 | GT6 | GS8 | |
|---|---|---|---|
| Cylinders | 1 to 12 | 1 to 6 | 1 to 8 |
| Spark duration | 500 to 3,000 µs | 500 to 1,500 µs | 500 to 3,000 µs |
| Timing | Global, individual cylinder, dual fuel | Global, dual fuel | Global, individual cylinder, dual fuel |
| Timing maps | 2D or 3D, 5 maps | Not listed | 2D or 3D, 5 maps |
| Trigger | Single pickup, OEM disc, A3 or A5 kit, GM distributor kit, drilled flywheel, 2-stroke | Single inductive pickup | Single, dual, up to 60 teeth plus reset |
| Features | Tach output, shutdown ground, fuel valve sequencing | Tach output | Tach output, shutdown ground, fuel valve sequencing |
| Engines | All sizes, up to 2 coils per cylinder | Up to 13 L | All sizes, up to 2 coils per cylinder |
Show the 4 rows that are the same
| GS12 | GT6 | GS8 | |
|---|---|---|---|
| Power | 12 / 24 V DC, 5 A | 12 / 24 V DC, 5 A | 12 / 24 V DC, 5 A |
| Maximum speed | 4,000 rpm | 4,000 rpm | 4,000 rpm |
| Communications | RS232, DB9 | RS232, DB9 | RS232, DB9 |
| Environment | -40 to +90 °C, IP67 | -40 to +90 °C, IP67 | -40 to +90 °C, IP67 |
AF120 is an air/fuel ratio controller rather than an ignition module, so it is not compared here. Compare the whole range
ACCESSORIES
GS12 accessories
The wiring loom, connector pack, coils, pickups and timing discs that complete a GS12 installation.
Wiring and connectors
- Ignition wiring loom, GS12
- Connector pack, 36 pin
Ignition coils
- SM60T ignition coil assembly, 12/24 V
- SM60A ignition coil assembly, 12 V
- AMP Superseal connector pack
- SM60 coil mounting adaptor plate
Pickups and timing discs
- Standard pickup sensor, inductive
- Pickup sensor, 5/8 – 18 thread
- Converged timing disc, 23 peg, 10 mm hole
- Timing disc, 13 peg, 6 cylinder
Order accessories with your sensor or on their own. Quote the part number when you get in touch.
BEFORE YOU SPECIFY
Is the GS12 the correct module?
Before specifying, confirm:
- the number of cylinders, up to 12, and coils per cylinder, up to 2
- the spark duration the engine and coils need
- the trigger method, including OEM disc, A3 or A5 kit, GM distributor kit or drilled flywheel
- whether the engine is 2-stroke or 4-stroke
- whether the engine needs individual cylinder timing or load-based 3D timing maps
- the 12 or 24 V DC supply available
If those match, the GS12 provides that configuration.
QUESTIONS
Frequently asked questions
What is the GS12 ignition module?
The GS12 is a robust, solid-state inductive ignition module from Gill for gas engines with 1 to 12 cylinders. It delivers 500 to 3,000 microseconds of continuous spark duration, supports up to two coils per cylinder and is set up with free Windows-based software.
Which engines does the GS12 suit?
The GS12 is used on gas engines of all horsepower and sizes, low speed or high speed, with 1 to 12 cylinders. Its trigger options cover 4-stroke engines, including wasted spark from a drilled flywheel pattern, and 2-stroke engines.
Which trigger methods does the GS12 support?
The GS12 can take its timing from a single pickup, an existing OEM disc and pickup, an A3 or A5 conversion kit, a GM distributor timing kit, a drilled flywheel pattern for wasted spark on 4-stroke engines, or a 2-stroke engine trigger.
What is the difference between the GS12 and the GS8?
The GS12 and GS8 share the same spark duration, timing options, software and features. The GS12 covers up to 12 cylinders against 8 for the GS8, and lists additional trigger methods for more engine types.
How can GS12 timing be adjusted?
GS12 timing can be adjusted globally, by individual cylinder or with a set of five load-input maps, in 2D (speed) or 3D (speed and load). The maps are set up and customised in the Windows-based software.
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