Tested and soldered cut wires on O2 sensor from a Toyota van.
Tools (Affiliate links)
O2 socket set http://amzn.to/2nl52ut
Soldering Flux Paste http://amzn.to/2nlbXDU
Soldering wire http://amzn.to/2mOdsX0
Butane Torch (This is nicer than what I have) http://amzn.to/2n5Mvjq
Heat Shrink http://amzn.to/2mOdFd7
Colored electrical tape http://amzn.to/2nl49lr