Motorsport Wiring & Electronics

Shop VTI Motorsports handmade wiring alongside supplier-built harnesses, ECU hardware and electrical components. Check each listing for the production source, exact fitment and included parts.

VTI In-House Harnessing

Start with VTI-built harnesses and cable kits. Choose the Honda H/B-Series OBD1 loom for P28 / Hondata S300 or the Link G4X loom for CivicLink HC96X / Honda OBD2A to suit your ECU.

Build the rest of your system

• Chassis subharnesses
• Power and ground upgrades
• Connectors and terminal kits
• Relay and power systems

Check fitment before ordering

Match the engine, vehicle year, ECU and connector configuration together. Read the harness buying guide or send a custom harness inquiry for a build outside the listed options.