Overview Reviews Product Description 558-126 Holley EFI Unterminated 15' Flying Lead Main Harness The unterminated main harness comes with both J1A and J1B connectors full terminated with 15' of flying lead wiring. Product Videos Custom Field Product Reviews Write a Review Write a Review × 558-126 Holley EFI Unterminated 15' Flying Lead Main Harness Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *