4L80E TRANSMISSION INTERNAL & EXTERNAL WIRE HARNESS 4l80e '91-03 4-speed automatic transmission with 17 bolt pan: internal & external wire harness repair kit. american made, original equipment quality by rostraBrand: ROSTRA 4L80E Internal & External Transmission Wiring Harness Kit New 4L80E transmission internal and external wiring harnesses. Fits GM 4L80E transmissions from 1991 to 2003. Comes with solder-less crimp connectors and installation instructions. 4L80E External Wire Harness 1994 and up GM - amazon 4L80E External Wire Harness 1994 and up GM Hopkins 41155 Plug-In Simple Vehicle Wiring Kit 3.1 out of 5 stars 57. $17. Stereo Radio Wiring Harness Antenna Adapter Replacement for Chevrolet GMC 3.0 out of 5 stars 2. $10.5/5(3) 4L80E external wiring harness update kit, 34445EK 4L80E External Wiring Harness Update 1991- up. Kit includes: External connector, wire support, and butt connector to make a quality connection. Buy quality transmission parts and wiring repairs. Fast free shipping to the US. Click the button below to add the External Wiring Harness Update 4L80E 1991-2009 34445EK to your wish list. 4L80E external wiring harness update kit, 34445EK | Chevy 4L80E external wiring harness update kit, 34445EK. Visit. Discover ideas about Motor Parts. External Wiring Harness Update up. Kit includes:External connector, wire support, and butt connector to make a quality connection. When using on 1991 internal harness must be changed. Motor Parts Installation Instructions for GM 4L80E External Harness Installation Instructions for GM 4L80E External Harness (350-0033) FOR UPGRADING 1991-1993 CONNECTORS AND FOR 1991 to 1993 pink wire at position "K" is not used with this kit. Tape the wire back to the harness to prevent a Installation Instructions for GM 4L80E External Harness (350-0033) FOR UPGRADING 1991-1993 CONNECTORS AND