Automotive Wire Terminals & Connectors
Insulated crimp terminals, connectors and accessories engineered for automotive wiring harnesses, repair and assembly — built to UL and JIS standards by Marrow Lin.
Reliable Automotive Wire Terminals for Harness & Repair
Vehicles are one of the most demanding environments a connection can face. Heat, constant vibration, moisture and tight assembly spaces all conspire to loosen or corrode a poor termination. Marrow Lin automotive wire terminals are built for exactly these conditions, giving harness makers, assembly lines and repair workshops a connection they can rely on for the life of the vehicle.
Our insulated crimp terminals — rings, spades, bullets, quick-disconnects and butt splices — combine a copper barrel for low-resistance conductivity with a colour-coded insulation grip that resists vibration and protects the joint. Produced to UL and JIS standards, they deliver the consistency that automotive customers expect, order after order.
Built for the conditions on board
A vehicle's wiring is never still. Our terminals are designed so a correct crimp holds firm under continuous vibration and thermal cycling, while the insulation sleeve guards against abrasion and short circuits in crowded looms. For added protection, our heat shrink tubing seals and insulates joints exposed to moisture.
A complete range for assembly and repair
Whether you are building harnesses in volume or carrying out roadside repairs, you can source every termination you need from one supplier. That means fewer vendors to manage, consistent quality across part types, and the flexibility to combine terminals, connectors and accessories in a single order.
Popular Terminals for Automotive Wiring
Key Considerations for Automotive Terminations
Vibration Resistance
Terminals and crimps that hold firm under the constant vibration and thermal cycling of a moving vehicle.
A Correct, Controlled Crimp
Consistent barrel dimensions help you achieve a reliable, low-resistance crimp with the right tooling every time.
Insulation & Protection
Colour-coded sleeves and heat shrink protect joints from abrasion, shorts and moisture in crowded looms.
Automotive Terminals: Frequently Asked Questions
Which terminals are best for automotive wiring?
Insulated crimp terminals — rings, spades, bullets, quick-disconnects and butt splices — are the most common choices for automotive harnesses because they are quick to fit and resist vibration.
Are your automotive terminals vibration-resistant?
Yes. A correct crimp on our terminals, with the insulation grip engaged, holds firm under the continuous vibration and thermal cycling found in vehicles.
Do you supply heat shrink for automotive use?
We do. Our flame-retardant heat shrink tubing seals and insulates joints exposed to moisture, abrasion or heat, and is ideal for under-bonnet repairs.
Are these terminals UL listed?
Our insulated terminals are produced to UL and JIS standards, and we hold UL files E488241, E182951 and E255748. Documentation is available on request.
What wire sizes do you cover?
We offer a full range of colour-coded sizes spanning the common automotive wire gauges. Tell us your wire cross-section and stud size and we will confirm the right part.
Can I get both male and female disconnects?
Yes. We supply matching male and female push-on (quick-disconnect) blade terminals, insulated and in a range of tab sizes.
Do you offer terminals for 12V and 24V systems?
Our terminals suit both 12V and 24V automotive systems; selection depends on the wire size and current rather than the system voltage.
Can you supply in bulk for assembly lines?
Yes. We regularly supply harness makers and assembly operations in volume, with packaging and quantities to suit your line.
Do you make custom automotive terminals (OEM)?
We do. As an OEM partner we can build to your drawing or sample with custom dimensions, platings and private-label packaging.
How do I request a quote or samples?
Send the products, sizes and quantities you need via our contact page and our Taipei team will respond quickly with pricing, availability and any samples.
Sourcing terminals for automotive wiring?
Tell us your application and volumes — we'll recommend the right parts and quote quickly.