{"product_id":"honda-vtec-volenoid-pressure-switch-conversion-harness-obd1-ecu","title":"Honda VTEC Solenoid \u0026 Pressure Switch Conversion Harness – OBD1 ECU","description":"\u003ch2 data-start=\"489\" data-end=\"552\"\u003e\u003cstrong data-start=\"492\" data-end=\"552\"\u003eHonda VTEC Solenoid \u0026amp; Pressure Switch Conversion Harness\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"554\" data-end=\"775\"\u003eThis VTEC solenoid and pressure switch conversion harness is designed for \u003cstrong data-start=\"628\" data-end=\"662\"\u003eOBD1 ECU VTEC conversion swaps\u003c\/strong\u003e, including B-series non-VTEC to VTEC conversions and other applications where dedicated VTEC wiring is required.\u003c\/p\u003e\n\u003cp data-start=\"777\" data-end=\"964\"\u003eThe harness provides proper wiring from the engine bay to the ECU using correct OBD1 ECU pins, allowing VTEC control to function as intended on P28, chipped OBD1 ECUs, and similar setups.\u003c\/p\u003e\n\u003chr data-start=\"966\" data-end=\"969\"\u003e\n\u003ch2 data-start=\"971\" data-end=\"1012\"\u003e\u003cstrong data-start=\"974\" data-end=\"1012\"\u003eDesigned for OBD1 VTEC Conversions\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"1014\" data-end=\"1256\"\u003eThis harness supports common VTEC conversion scenarios where the factory chassis or engine harness does not include VTEC wiring. It is ideal for LS-VTEC builds, D-series VTEC conversions, and custom engine setups using OBD1 engine management.\u003c\/p\u003e\n\u003cp data-start=\"1258\" data-end=\"1385\"\u003eAll wiring is properly terminated to support ECU-controlled VTEC engagement and, when applicable, VTEC oil pressure monitoring.\u003c\/p\u003e\n\u003chr data-start=\"1387\" data-end=\"1390\"\u003e\n\u003ch2 data-start=\"1392\" data-end=\"1431\"\u003e\u003cstrong data-start=\"1395\" data-end=\"1431\"\u003eSelectable Configuration Options\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"1433\" data-end=\"1537\"\u003eThis VTEC conversion harness is available in two selectable configurations to match your specific setup.\u003c\/p\u003e\n\u003cp data-start=\"1539\" data-end=\"1732\"\u003eThe VTEC solenoid–only option includes the wiring and ECU pin required for VTEC solenoid control, commonly used for P28 or chipped OBD1 ECU setups where a pressure switch input is not required.\u003c\/p\u003e\n\u003cp data-start=\"1734\" data-end=\"1940\"\u003eThe complete VTEC solenoid and pressure switch option includes wiring for both the VTEC solenoid and the VTEC oil pressure switch, providing everything needed for a full VTEC conversion with ECU monitoring.\u003c\/p\u003e\n\u003cp data-start=\"1942\" data-end=\"2038\"\u003eSelection is made at checkout to ensure the correct configuration is built for your application.\u003c\/p\u003e\n\u003chr data-start=\"2040\" data-end=\"2043\"\u003e\n\u003ch2 data-start=\"2045\" data-end=\"2078\"\u003e\u003cstrong data-start=\"2048\" data-end=\"2078\"\u003eMil-Spec Wire Construction\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"2080\" data-end=\"2238\"\u003eThis harness is built in-house using \u003cstrong data-start=\"2117\" data-end=\"2162\"\u003etop-tier mil-spec M22759\/32 (Tefzel) wire\u003c\/strong\u003e, offering excellent heat resistance, durability, and long-term reliability.\u003c\/p\u003e\n\u003cp data-start=\"2240\" data-end=\"2486\"\u003eHarness length is approximately \u003cstrong data-start=\"2272\" data-end=\"2311\"\u003eOEM length plus one additional foot\u003c\/strong\u003e, providing extra flexibility for routing in swapped or tucked engine bay configurations. Loom is applied where appropriate, with DR-25 used when loomed sections are required.\u003c\/p\u003e\n\u003chr data-start=\"2488\" data-end=\"2491\"\u003e\n\u003ch2 data-start=\"2493\" data-end=\"2545\"\u003e\u003cstrong data-start=\"2496\" data-end=\"2545\"\u003eOEM-Style Connectors \u0026amp; Proper ECU Termination\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"2547\" data-end=\"2778\"\u003eOEM-style engine bay connectors are used to ensure proper fitment at the VTEC solenoid and pressure switch. ECU-side wiring is terminated with correct OBD1 ECU pins for direct insertion into compatible ECUs or conversion harnesses.\u003c\/p\u003e\n\u003cp data-start=\"2780\" data-end=\"2858\"\u003eThis ensures a clean, professional installation without splicing or guesswork.\u003c\/p\u003e\n\u003chr data-start=\"2860\" data-end=\"2863\"\u003e\n\u003ch2 data-start=\"2865\" data-end=\"2885\"\u003e\u003cstrong data-start=\"2868\" data-end=\"2885\"\u003eCompatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"2887\" data-end=\"2988\"\u003eDesigned for OBD1 ECU applications including P28 and chipped OBD1 ECUs used in VTEC conversion swaps.\u003c\/p\u003e\n\u003cp data-start=\"2990\" data-end=\"3136\"\u003eCommon applications include B-series non-VTEC to VTEC conversions, D-series VTEC swaps, and custom engine setups requiring standalone VTEC wiring.\u003c\/p\u003e\n\u003chr data-start=\"3138\" data-end=\"3141\"\u003e\n\u003ch2 data-start=\"3143\" data-end=\"3165\"\u003e\u003cstrong data-start=\"3146\" data-end=\"3165\"\u003eImportant Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"3167\" data-end=\"3256\"\u003eThis harness is intended for VTEC-capable ECUs and properly configured engine management.\u003c\/p\u003e\n\u003cp data-start=\"3258\" data-end=\"3336\"\u003eInstaller is responsible for ensuring ECU calibration supports VTEC operation.\u003c\/p\u003e\n\u003cp data-start=\"3338\" data-end=\"3436\"\u003eThis product is built in-house by VTEC Innovations using professional motorsport wiring practices.\u003c\/p\u003e","brand":"VTI","offers":[{"title":"VTEC Solenoid ONLY","offer_id":47311383036096,"sku":"VTEC-PGT-DUAL-OBD1","price":25.0,"currency_code":"USD","in_stock":true},{"title":"VTEC \u0026 Pressure Switch","offer_id":47311383068864,"sku":"VTEC-PGT-DUAL-OBD2","price":35.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/7956\/1152\/files\/IMG-2026-05-25-182034.jpg?v=1779747664","url":"https:\/\/www.vtecinnovations.com\/products\/honda-vtec-volenoid-pressure-switch-conversion-harness-obd1-ecu","provider":"VTI","version":"1.0","type":"link"}