ISO 11446 (13-Pin) vs. ISO 1724 (7-Pin)
Comparing 2 standards across 14 specifications. 14 key differences identified.
The ISO 11446 Connector (also known as the Jaeger 13-Pin European standard) is the modern mandatory trailer electrical interface across Europe, the UK, and Australia. Featuring an IP-sealed, waterproof bayonet twist-locking circular housing with 13 gold-plated pin contacts supporting individual left/right lighting circuits, rear fog lamps, reverse lights, and continuous/switched caravan power.
The ISO 1724 Connector (commonly known as the European Type 12N 7-Pin plug) is the classical European standard for basic trailer lighting. Featuring a circular 7-pin metal or plastic housing with split brass pins, it provides the essential exterior road lighting circuits (left/right turn, isolated left/right tail lights, brake lights, and rear fog lamp).
Specification Comparison Table
14 Parameters| Parameter / Spec | ||
|---|---|---|
|
Standardization
|
ISO 11446-1 / DIN ISO 11446 (Jaeger 13-Pole System) | ISO 1724 / DIN 72577 (Type 12N–Normal) |
|
Mechanical Bayonet Lock
|
90-degree twist-to-lock bayonet collar with double silicone perimeter gasket (fully waterproof IP67) | — |
|
Pin 1 & 4 (Indicators)
|
Pin 1: Left Indicator (Yellow) | Pin 4: Right Indicator (Green) | — |
|
Pin 2 & 8 (Fog & Reverse)
|
Pin 2: Rear Fog Lamp (Blue) | Pin 8: Reversing Lights (Pink) | — |
|
Pin 3, 11, 13 (Independent Grounds)
|
Pin 3: Ground for Pins 1-8 | Pin 11: Ground for Pin 10 | Pin 13: Ground for Pin 9 (isolated 2.5 mm² ground returns) | — |
|
Pin 5 & 7 (Isolated Left/Right Tail)
|
Pin 5: Right Side Marker/Tail (Brown) | Pin 7: Left Side Marker/Tail (Black — separate fuses prevent total blackout if one side fails) | — |
|
Pin 9 & 10 (Caravan Power)
|
Pin 9: Permanent +12V unswitched battery feed (Orange) | Pin 10: Switched ignition +12V for caravan 3-way absorption refrigerator (Grey) | — |
|
Pin 1 (Yellow–Terminal L)
|
— | Left Hand Direction Indicator (Turn signal) |
|
Pin 2 (Blue–Terminal 54G)
|
— | Rear Fog Lamp (or +12V permanent feed on older caravans) |
|
Pin 3 (White–Terminal 31)
|
— | Common Chassis Ground Return |
|
Pin 4 (Green–Terminal R)
|
— | Right Hand Direction Indicator |
|
Pin 5 (Brown–Terminal 58R)
|
— | Right Hand Tail Light, Clearance Lights, and License Plate Lamp |
|
Pin 6 (Red–Terminal 54)
|
— | Brake / Stop Lights |
|
Pin 7 (Black–Terminal 58L)
|
— | Left Hand Tail Light and Left Hand Clearance Lights |