Check the listing for details. Extension Harness for Holley EFI J1A P1A - Various Lengths. Condition: New. Listed at 102.13 USD. EBAY STORE HOME BUSINESS HOURS MON-FRI 9AM-4PM EST CONNECTOR KITS CONNECTOR PIGTAILS AUTOMOTIVE WIRE AUTOMOTIVE COMPUTERS ADAPTER HARNESSES Extension Harness for Holley EFI J1A P1A - Various Lengths This extension harness is a plug and play solution that extends the Holley Dominator ECU 34 pin J1A (P1A) connection. J1A, also referred to as P1A, is the 34 pin ECU connector on all Holley EFI main engine harnesses. AUTOMOTIVE WIRING PRODUCTS Extension Harnesses meet or exceed the quality of Original Equipment (OE) harnesses:Assembled w/ the same materials found on production engine harnesses.Terminals are crimped w/ production applicators and/or Rennsteig hand tools to exceed pull test requirements.Wires are protected w/ high temperature fiberglass sleeving.Assembled in the USA CONNECTOR KITS CONNECTOR PIGTAILS AUTOMOTIVE WIRE AUTOMOTIVE COMPUTERS ADAPTER HARNESSES