VTI OBD1 Mil-Spec Engine Harness – Honda B / D-Series

⚠️ Pre-Order — Built To Order. Ships After Production.

This harness is available on a pre-order basis only. When you order, your build enters our production queue and is constructed specifically for your chassis, injector type, and distributor configuration. Typical lead time is 3–5 weeks.

If you want the cleanest OBD1 engine harness available for your Honda B-Series or D-Series build — this is it. Every VTI OBD1 Mil-Spec harness is built to order using true mil-spec materials, proper gauge selection, and structured routing standards that most harness builders don't even attempt.

This is not a repackaged eBay harness. This is a professional baseline mil-spec system — built the same way every time, for every customer.

Includes a chassis-matched subharness for seamless C101 integration.

What Makes VTI Different

• True black M22759/32 mil-spec wire — no color striping, no printed labels
• Proper gauge selection per circuit load
• Spec-55 shielded signal wiring
• Raychem ATUM adhesive-lined transitions
• Fully black non-printed heat shrink
• OEM engine and sensor connectors
• Structured routing and strain relief throughout

No mixed materials. No shortcuts. No compromises.

Included With Every Harness

• Standard OBD1 ECU configuration
• Injector selection matched to your setup
• Distributor configuration selection
• Chassis-specific subharness
• C101 factory-style integration
• Reversible installation — no permanent chassis modification

Your chassis selection ensures proper routing of tach signal, MIL / Check Engine Light, Vehicle Speed Sensor, and core ECU interface circuits.

Engine Compatibility

Designed for Honda OBD1 ECU platforms including:

• B16
• B18
• B20
• D15
• D16

Product Scope

This is our standardized mil-spec OBD1 configuration. It does not include bulkhead firewall pass-through, full concentric motorsport layout, PDM expansion systems, or fully bespoke ECU architecture. For those systems, refer to our Custom Mil-Spec Harness Line.

How Pre-Order Works

After purchase, you'll receive a Build Confirmation Form to finalize your chassis, ECU, sensor, and engine configuration. Production begins once your form is submitted. No guesswork — your harness is built exactly to your spec before it ships.