SAE J1128
SAE J1128 is a U.S. automotive wire standard established by the Society of Automotive Engineers (SAE) for low-voltage electrical systems in passenger cars, trucks, and off-road equipment. It specifies construction, performance, and testing requirements for primary wires in 12V and 24V systems.
The standard includes wire types such as GPT, GXL, SXL, and TXL, which vary in insulation thickness and temperature ratings. These wires are widely applied in control circuits, lighting, dashboards, engine compartments, and power distribution throughout vehicles.
Designed for demanding automotive environments, J1128-compliant wires provide abrasion, chemical, and heat resistance with flexibility across operating ranges from -40°C to +125°C. Trusted by OEMs and harness manufacturers worldwide, SAE J1128 ensures reliable, safe, and durable vehicle electrical systems.
TXL
TXL automotive wire with thin-wall XLPE insulation, rated -40°C to +125°C. Offers heat resistance, flexibility, and durability for wiring harnesses and vehicle power systems.
GXL
GXL automotive wire with XLPE insulation, rated -40°C to +125°C. Provides heat resistance, flexibility, and durability for wiring harnesses, power, and control circuits.
SXL
SXL automotive wire with heavy-wall XLPE insulation, rated -40°C to +125°C. Delivers heat, oil, and abrasion resistance for engine, battery, and heavy-duty vehicle wiring.
GPT
GPT automotive wire with PVC insulation, SAE J1128 compliant and rated -40°C to +80°C. Ideal for dashboards, lighting, control modules, and low-voltage automotive circuits.
HDT
HDT automotive wire with heavy-wall PVC insulation, SAE J1128 compliant and rated -40°C to +80°C/60V. Ideal for batteries, power circuits, and rugged off-road wiring.
TWP
TWP automotive wire with thin-wall PVC insulation, SAE J1128 compliant and rated -40°C to +80°C/60V. Ideal for dashboards, control circuits, and light-duty signal wiring.