[RANDY P]

Originally Posted by sc_rufctr

Looking at the photos... You're much better off replacing the wires!
You could muck around with heat shrink tubing etc but IMO it would be easier to replace them.

This is worth a look.

Engine Wiring Harness rebuild DIY step-by-step - Mercedes-Benz Forum

What I was thinking, cut and splice / solder if you have to and reinforce around the soldering points to prevent fracturing.

If it's not critical to running and not too hard to access I'd even use butt connectors. Strip the wire all the way to the connector, leave about 2" of bare copper showing going up to the connector, cut the old wire away.

Take another piece of fresh wire about same gauge, strip the casing off and save the casing- slip it over the 2" bare wire going to the connector, you have just reshielded the wire. Butt connect it there to hold it in place.

Connect fresh wire between the two terminals. Done. Put in loom for protection

I do this when I install capacitors inline for audio, works fine.

rjp