Yes shied all of the way to the throttle body on the black wire. Also if you are running timing control twist the 2 distributor magnetic pickup wires, then wrap them with aluminium foil, wrap a piece of bare wire (I used stainless steel wire that I got for securing the wheel studs when I installed my Wilwood brakes) and then I installed a crimp connector to the wire and then grounded the side from the 2 pin connector to the throttle body to the throttle body mounting stud (hardley noticeable if you take the plastic cover off of the eyelet, crimp the solder it and slide a piece of heat shrink over it). Then do the same thing with the other half of the wire from the 2 pin connector to the distributor and ground it to the distributor housing. I used this covering to make it look pretty. You don't have to take of the connector it is slit and it slips right over the wires. It comes in several diameters and looks a lot like what Fitech used from the factory. Here's the link.
Amazon.com: 3/8" Split F6 Braided Cable Sleeving Wrap, Split Loom, Techflex (50FT): Automotive
Also make sure you run a ground strap from the throttle body to the firewall. Fitech is depending on the mounting studs to ground everything and I wouldn't trust that.
I did make a shield for my pickup inside of the distributor, I assume you've seen the picture on my thread.
I didn't have to shield the O2 harness but some have said they needed to.
Oh by the way, you can also use braided steel to shield the wires but it costs a lot more and it's a PIA to work with.
