Replacing Bendix MAG Leads

I have a mag lead who's shield is starting to break at the plug end. Has anyone found a way to replace one lead on a Bendix Mag where the lead is somehow attached to the 'cap'? Maybe using one of these:

https://www.aircraftspruce.com/catalog/eppages/harness08-13222-5.php#review_tab

Does this required a special tool for attaching the lead to the mag cap? Thanks in advance, for your thoughts.
Marty

Not sure which model of Bendix mag you have, however the most common models in our little airplanes is pretty simple in terms of its P-lead connection. At the end of the wire you'll find a brass washer to which the centre conductor of the P-lead wire is soldered. Very carefully desolder the connection, remove the brass washer and keep in a safe place. Remove the two (model dependent, only one on some models) insulating "cigarettes" from the P-lead wire, then slide the shield ferrule and threaded cap up the P-lead wire.

Re-terminate by cutting as much wire is needed off the end (typically only about 1/2" if it's just a frayed ground connection), slide the two "cigarettes" up the centre conductor, strip off the centre conductor insulation to an appropriate length, slide the brass washer on and solder in place. Once you've got this done, straighten the hairs of the shield conductor so they lay flat over the ferrule and trim so they don't project past the edge of the ferrule. Slide the assembly into the magneto and clamp in place with the nut.

Be very sure you haven't managed to get any little "hairs" of shield wire inside the P-lead hole in the mag!

P lead

If you need to replace the p lead it is just generic 18 gauge shielded wire. DO NOT ground the shield at the switch.

plug lead replacement, NOT P-lead

Marty6a --
you are on the right path. It IS possible to replace these leads, individually, and you have identified the basic part you'll need. HOWEVER: if the shielding is breaking down near the plug, it is likely that the entire harness is 'not young'. That means a high likelihood that you will break leads/ shielding/ cores at the magneto plate as you disassemble to get the target one out. You then get to re-work more leads...
You'll want to try to match impedance in the new lead with what you have in the harness; same manufacture/ type is sufficient.
Short version: ask around, get some help from somebody who's actually done this. If it costs you $$, you'll still be ahead -- you have now learned the process.