Connecting a 13 Pin towbar wiring kit: What is +30 (steady plus) and +15?
In the automotive industry, the codes (+30) and (+15) are standard references to identify the electrical supply points in a vehicle circuit.
(+30): Indicates the 12V (nominal voltage) or 24V (nominal voltage) battery of the vehicle. Simply put, it is the positive pole of the battery – a high voltage electrical supply point on the vehicle.
(+15): Refers to the power supply that is activated when the ignition key is in the ‘run’ position, allowing power to flow to certain components of the vehicle.
Click on the link below to learn more about (+30) and (+15) including extension kits offered by ERICH JAEGER.
