VTI Technical Articles

Wiring Guides & Technical Articles

Practical knowledge for your next wiring project

VTI Wiring Authority brings together technical guides and articles for harness builders, fabricators, and performance enthusiasts. Explore the decisions behind engine wiring, ECU integration, connector selection, and serviceable electrical systems.

What you can explore

  • Harness materials and construction: wire selection, DR-25 sleeving, shielding, routing, and strain relief.
  • ECU and engine integration: Honda and standalone systems, including Hondata, Link, Haltech, and FuelTech.
  • Power and grounding: relay and PDM architecture, high-current cable planning, and grounding strategy.
  • Connectors and sensors: DTM, Superseal, OEM connector systems, and sensor wiring considerations.

Start with a technical guide for a specific task, or browse news and wiring insights for broader project planning. Check each article's application and supporting documentation against your own hardware.

Technical Guides

View all
  • GM 13577379 Flex Fuel Sensor Wiring & Hondata S300 V3 Setup Guide (OBD1)

    GM 13577379 Flex Fuel Sensor Wiring & Hondata S...

    Complete GM 13577379 flex fuel sensor wiring and Hondata S300 V3 setup guide for OBD1 Honda platforms. Covers pinout, mounting, digital input wiring, and converter options.

    GM 13577379 Flex Fuel Sensor Wiring & Hondata S...

    Complete GM 13577379 flex fuel sensor wiring and Hondata S300 V3 setup guide for OBD1 Honda platforms. Covers pinout, mounting, digital input wiring, and converter options.

  • MAC 3-Port Boost Control Solenoid & Harware

    OBD1 P28 Boost Controller Wiring & Hondata S300...

    Complete boost controller wiring and setup guide for OBD1 P28 with Hondata S300. Covers MAC 3-port and 4-port solenoids, interrupt-style plumbing, C101 integration, PWM configuration, closed-loop setup, and proper fail-safe...

    OBD1 P28 Boost Controller Wiring & Hondata S300...

    Complete boost controller wiring and setup guide for OBD1 P28 with Hondata S300. Covers MAC 3-port and 4-port solenoids, interrupt-style plumbing, C101 integration, PWM configuration, closed-loop setup, and proper fail-safe...

  • T1 Race Differential Hall Sensor 437 Crank & Cam

    T1 4-Pin Cam/Crank Sensor Wiring Guide (Mil-Spec)

    Complete mil-spec wiring guide for the T1 4-pin cam/crank sensor. Learn proper 12V power strategy, shield termination, and why drain wire should never be used as ground in professional harness...

    T1 4-Pin Cam/Crank Sensor Wiring Guide (Mil-Spec)

    Complete mil-spec wiring guide for the T1 4-pin cam/crank sensor. Learn proper 12V power strategy, shield termination, and why drain wire should never be used as ground in professional harness...

1 3
View all

News & Wiring Insights

View all
  • 97-01 Prelude Subharness Adapter OBD1

    Honda Prelude SH ATTS Wiring Issue – 14-Pin Con...

    A diagnostic case study covering a 2000 Honda Prelude SH ATTS chassis wiring issue involving dual 14-pin engine bay connectors during H-Series subharness installation, and how proper connector identification restored...

    Honda Prelude SH ATTS Wiring Issue – 14-Pin Con...

    A diagnostic case study covering a 2000 Honda Prelude SH ATTS chassis wiring issue involving dual 14-pin engine bay connectors during H-Series subharness installation, and how proper connector identification restored...

  • The Electrical Side of Honda Engine Swaps: Chassis Signal Mapping & OBD Integration

    The Electrical Side of Honda Engine Swaps: Chas...

    Understanding Honda engine swaps goes beyond the engine harness. This guide breaks down chassis signal mapping, OBD differences, tach integration, MIL routing, and VSS communication to explain why proper subharness...

    The Electrical Side of Honda Engine Swaps: Chas...

    Understanding Honda engine swaps goes beyond the engine harness. This guide breaks down chassis signal mapping, OBD differences, tach integration, MIL routing, and VSS communication to explain why proper subharness...

  • Why Shield Strategy Matters in Honda Distributor (OBD1) Systems

    Why Shield Strategy Matters in Honda Distributo...

    Proper shielding of CKP, TDC, and CYP signals in Honda OBD1 distributor systems is critical for stable ignition timing, clean RPM sync, and long-term reliability. Here’s why most aftermarket harnesses...

    Why Shield Strategy Matters in Honda Distributo...

    Proper shielding of CKP, TDC, and CYP signals in Honda OBD1 distributor systems is critical for stable ignition timing, clean RPM sync, and long-term reliability. Here’s why most aftermarket harnesses...

  • Street-Spec vs Blackline: Choosing the Right VTI Mil-Spec Harness System

    Street-Spec vs Blackline: Choosing the Right VT...

    What’s the difference between VTI Street-Spec and Blackline mil-spec harness systems? Both use true motorsport-grade materials — but the execution intent, aesthetic philosophy, and labor depth set them apart.

    Street-Spec vs Blackline: Choosing the Right VT...

    What’s the difference between VTI Street-Spec and Blackline mil-spec harness systems? Both use true motorsport-grade materials — but the execution intent, aesthetic philosophy, and labor depth set them apart.

1 4
View all

Looking for pinouts and wiring diagrams?

Open the technical reference library for ECU pinouts, chassis connector diagrams, manufacturer manuals, and integration notes.

Open the Reference Library