J4, also referred to as P4, is the 26 pin ECU connector on. CONNECTOR KITS CONNECTOR PIGTAILS AUTOMOTIVE WIRE AUTOMOTIVE COMPUTERS ADAPTER HARNESSES.
26 Pin J4 P4 4L60E/80E Transmission Extension Harness for use w/ Holley EFI
26 Pin J4 P4 GM 4L60E 4L80E Trans Extension for use w/ Holley EFI ECUs
OBD2 Adapter Cable for TSL Model 3/Y 2019-Present 26 Pin to 16 Pin Diagnostic...
Extension Harness for Holley 26 Pin J2B P2B - Various Length
OBD2 16Pin to 26 Pin OBDII Adapter Car Connector Extension Diagnostic Cable Lead
MUYI 5 Kits 3 Pin Way JST Waterproof Connector 26-22 AWG 3 Pin, White
