4L80E Standalone Wiring Harness - with EV1,EV6 Injector Connectors Plug Fits for 1997-2006 LS VORTEC 4.8L 5.3L 6.0L W/4L80E Engine Wiring Harness Aftermarket Parts, with 3 Month Warranty

Swapping a 6.0l into my jeep. I had my computer flashed, and hooked this kit up and it fired right up. The fuse block is not weatherproof so plan your mounting accordingly. Everything was pinned correctly and worked with no issues.

Ordered this harness to save time, but this was not true. They say this is a standalone wire harness. A standalone harness to me would be plug and play and wouldn't need to do anything more to it to get the car running. This harness has no starter wiring, or neutral saftey wiring, and reverse lights. Had to remove this wiring from my old harness and slip that wiring into the wire loom to make it look right. This is 5 wires!!! This company cant add 5 wires into their harness, to simplify things. After I got it all in place I went to start the car and it was misfiring had a code P0200 for injector harness. I'm an auto mechanic, so I do have the testing tools and knowledge. I found Bank 1 injectors have no power on the pink wire. Bank 2 injectors were firing just fine. I back probed a 12 volt wire in to the pink wire and it runs fine. A new wiring harness that is bad, that I will have to run a overlay wire into the harness to get the 12 volts or rip apart the harness to find the break. The installation instructions color coding does not match the harness. Yellow and pink should be injector 6 according to the instructions, but it's at the cylinder 3 spot. Cylinder six spot is pink and red, which doesn't match up with anything. Yep, found more problems. I took harness apart to find out why I didn't have power on the pink wire to the bank 1 injectors. I found a cheap heat shrink connection that they used a crimp connector and didn't soldier the connection. The wire coming from the fuse was not in the crimp. I soldered the connection and tested the circuit, still no power. I found about 13 inched down the harness another crimp connection that was poorly done and not soldiered. There was no need for this connection except for if they ran short on wire. I finally got my car started. But I ran into a problem!! Car won't shut off. After hours of diag. I found the problem!! They used a cheap fuse block. The keep alive memory fuse for the computer in the fuse block was not separated from the key off fuses causing everything to stay alive. After using a screwdriver and separating the circuits in the cheap fuse block now I'm able to shut the car off. I WOULD NOT BUY THIS HARNESS AGAIN!!!! CHEAP, CHEAP, CHEAP

The wiring harness assembled easy. Unfortunately the directions and diagrams didn't quite match up 100% but it was still self explanatory

Fuse block missing a connecting pin and unable to get power to throttle body and unable to find out how to contact the mfg.

Description states would fit my vehicle and it definitely does NOT!!!! Now I can’t return it. Not a happy customer.