Alternator Voltage Regulator 24V Mercedes Actros 5 Pin Tach L IG Sense CPU 28.3V DAF Scania Volvo REG1134
Alternator Voltage Regulator 24V Mercedes Actros 5 Pin Tach L IG Sense CPU 28.3V DAF Scania Volvo REG1134
Vehicle Compatibility
Alternator voltage regulator for 24V heavy duty alternator applications, commonly listed for Mercedes-Benz Actros where the alternator uses a matching 5 pin connector in the Tach L IG Sense CPU layout (plug type IDTach-L-IG-Sense-CPU) and the same charging characteristics. Also cross-referenced for DAF, Scania, Volvo and certain VAG heavy duty builds where the OE reference matches. Specified with active lamp function, very fast 0.5 sec LRC response and short circuit protection. Confirm by alternator label and plug style before ordering.
- Mercedes-Benz: Actros alternator applications matching listed OE references
- DAF: 1600348; 1623869; 1810399
- Scania: 1501245; 1501246; 1502245
- Volvo: 20802191
- VAG (heavy duty reference): 2TB903803A
Specifications
- Reference: REG1134
- Part Type: Alternator Voltage Regulator
- System Voltage: 24V
- Operating Voltage: 28V
- Charging Voltage: 28.3V
- Connector / Pins: 5 Pin (Tach-L-IG-Sense-CPU)
- Plug Type: IDTach-L-IG-Sense-CPU
- Specification: 0.5 Sec. LRC; Active Lamp
- Short Circuit Protection: Yes
OE Numbers
- Mercedes-Benz: A0001543805
- Mercedes-Benz: 0001542405
- Mercedes-Benz: 0001542406
- Mercedes-Benz: 0001542605
- Mercedes-Benz: 0001542705
- Mercedes-Benz: 0031542606
- Mercedes-Benz: 0031544206
- Mercedes-Benz: 0031542605
- DAF: 1600348
- DAF: 1623869
- DAF: 1810399
- Scania: 1501245
- Scania: 1501246
- Scania: 1502245
- VAG: 2TB903803A
- Volvo: 20802191
Features
- 24V regulator specification for heavy duty alternator builds used on Mercedes Actros and related cross-referenced platforms
- 5 pin Tach-L-IG-Sense-CPU layout to match compatible alternator harness interfaces
- 28.3V charging control for stable battery charging on 24V systems
- 0.5 second LRC behaviour with active lamp function for correct warning lamp and fast regulation response
- Short circuit protection to support reliability and reduce repeat failures on compatible alternator builds
Why Buy From Us
- Local South African stock with nationwide courier delivery
- 12-month warranty subject to correct application and installation
- Fitment support using alternator labels and clear photos of the existing plug and regulator
- Trusted by workshops and fleet operators for dependable charging system components
Trusted by thousands of South African drivers for quality and durability.
Installation & Maintenance Tips
- Isolate the batteries and confirm the system is 24V before alternator or regulator work
- Confirm the connector is 5 pin Tach-L-IG-Sense-CPU (IDTach-L-IG-Sense-CPU) and the OE reference matches before fitting
- Inspect brushes, slip rings and internal connections while the alternator is open and replace worn parts as required
- Ensure B+ and earth connections are clean and tight to prevent voltage drop and repeat failures
- After installation, verify charging voltage under load and confirm stable system voltage
- If you are unsure about alternator repairs on heavy duty systems, have the unit fitted and tested by a qualified auto electrician



Description
Vehicle Compatibility
Alternator voltage regulator for 24V heavy duty alternator applications, commonly listed for Mercedes-Benz Actros where the alternator uses a matching 5 pin connector in the Tach L IG Sense CPU layout (plug type IDTach-L-IG-Sense-CPU) and the same charging characteristics. Also cross-referenced for DAF, Scania, Volvo and certain VAG heavy duty builds where the OE reference matches. Specified with active lamp function, very fast 0.5 sec LRC response and short circuit protection. Confirm by alternator label and plug style before ordering.
- Mercedes-Benz: Actros alternator applications matching listed OE references
- DAF: 1600348; 1623869; 1810399
- Scania: 1501245; 1501246; 1502245
- Volvo: 20802191
- VAG (heavy duty reference): 2TB903803A
Specifications
- Reference: REG1134
- Part Type: Alternator Voltage Regulator
- System Voltage: 24V
- Operating Voltage: 28V
- Charging Voltage: 28.3V
- Connector / Pins: 5 Pin (Tach-L-IG-Sense-CPU)
- Plug Type: IDTach-L-IG-Sense-CPU
- Specification: 0.5 Sec. LRC; Active Lamp
- Short Circuit Protection: Yes
OE Numbers
- Mercedes-Benz: A0001543805
- Mercedes-Benz: 0001542405
- Mercedes-Benz: 0001542406
- Mercedes-Benz: 0001542605
- Mercedes-Benz: 0001542705
- Mercedes-Benz: 0031542606
- Mercedes-Benz: 0031544206
- Mercedes-Benz: 0031542605
- DAF: 1600348
- DAF: 1623869
- DAF: 1810399
- Scania: 1501245
- Scania: 1501246
- Scania: 1502245
- VAG: 2TB903803A
- Volvo: 20802191
Features
- 24V regulator specification for heavy duty alternator builds used on Mercedes Actros and related cross-referenced platforms
- 5 pin Tach-L-IG-Sense-CPU layout to match compatible alternator harness interfaces
- 28.3V charging control for stable battery charging on 24V systems
- 0.5 second LRC behaviour with active lamp function for correct warning lamp and fast regulation response
- Short circuit protection to support reliability and reduce repeat failures on compatible alternator builds
Why Buy From Us
- Local South African stock with nationwide courier delivery
- 12-month warranty subject to correct application and installation
- Fitment support using alternator labels and clear photos of the existing plug and regulator
- Trusted by workshops and fleet operators for dependable charging system components
Trusted by thousands of South African drivers for quality and durability.
Installation & Maintenance Tips
- Isolate the batteries and confirm the system is 24V before alternator or regulator work
- Confirm the connector is 5 pin Tach-L-IG-Sense-CPU (IDTach-L-IG-Sense-CPU) and the OE reference matches before fitting
- Inspect brushes, slip rings and internal connections while the alternator is open and replace worn parts as required
- Ensure B+ and earth connections are clean and tight to prevent voltage drop and repeat failures
- After installation, verify charging voltage under load and confirm stable system voltage
- If you are unsure about alternator repairs on heavy duty systems, have the unit fitted and tested by a qualified auto electrician












