For over 23 years S.P. AUTO has manufactured wiring harnesses to Japanese OEM standards — trusted by leading global automotive brands including Toyota, Honda and Isuzu. Three production plants, one headquarters, and the flexibility to move from High Mix Low Volume prototyping to full mass production.
Few manufacturers can deliver both meticulous low-volume work and factory-scale output. We do both — under one quality system.
Products manufactured to the Japanese OEM standards that global automotive brands rely on.
Many product variants in small quantities — ideal for prototyping and market testing.
Scale to high-volume production without compromising quality or lead time.
Proven experience across automotive, appliances, agricultural machinery and more.
Our engineers work with you from the first conversation through design, validation and delivery — a single accountable partner across the whole flow.
Custom wiring harnesses and cable assemblies engineered to your specification and application.
Consultation, design support and prototyping by specialist engineers before you commit to tooling.
IATF 16949 and ISO 9001 certified processes, with end-to-end traceability and transparent reporting.
From passenger vehicles to agricultural machinery — the same quality system applied across every sector we supply.
Harnesses for both combustion and electric platforms.
Reliable assemblies for high-volume consumer products.
Low-volume, high-complexity builds for SPV applications.
Durable harnesses engineered for demanding field conditions.
Custom and replacement harnesses for the aftermarket channel.
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