Just experimenting last weekend with the best way to cover the exposed copper wire running from the pyrometer sensors on my exhaust manifold back to the firewall. I ended up trying Nokon bicycle cable housing. I use it on all my bikes -- not exactly cheap but well worth the expense.

The Nokon housing uses a slip-on Teflon liner and small ball-joint aluminum links. I left the original wire loom and continued with the links from there. I was a little worried about how it would handle heat, especially the liner. So far it's working fine. Eventually, I'd like to find a better collector / routing method than zip-ties. What do you guys think?

 

That looks sweet, I never thought of using bike cable to cover the wires but that is a good idea.