Hi guys, after lurking here for 10 or 15 years, I finally have something worthwhile to contribute.
One of my hobbies is car audio installation. After buying my 2002 SR5, I wanted to install a modern car stereo to enable hands-free cell phone use, and equally important, install a backup camera. Both important safety enhancements, in my opinion. The one obstacle that I struggled with was fishing the backup camera cable through the rubber rear hatch wire boot while maintaining a factory look. I read everything I could find here, on YouTube, and on the wider Web without a completely satisfactory solution. I did find several threads here that were very helpful, and I want to express my thanks to all who contributed.
Finally, after weeks of reading, I happened upon the key search term “automotive wire loom threading tools”, and found this!
CT4526 - 5pc Wire Loom Threading Kit — Neilsen Tools
I used the flexible tool (shown coiled up in the picture) with a little wire pulling lube, and it worked great! I will say that the only place I could find it is from a vendor in England, and I probably paid as much for shipping as for the tool, but worth every penny.