To me there wasn't much room underneath, my truck isn't up in the air high enough, with the exhaust and the 4x4 front shaft, not much room to work with. The other was was fairly easy. I did lengthen my wires out just a little so it wasn't so tight to get back together. The only thing that has bugged me is did I put the harness back in the right direction. Forgot to take a picture. I am sure I did because I gave it a half twist when I looked at the numbers to get the right wires. I just don't like being unsure. You don't need to tape the wires, I started out doing that, but following the chart and moving one wire at a time, it when really easy. I did mark the ones that I left out and had questions about, that way I knew what wires that needed put on. I better get to spraying weeds this morning, the dog is gone for the day so I will be spraying her pen, weed control.