That photo shows a breakdown that's different then what I've seen in the later (built after I think 8/92) cars, where the insulation turns to powder. Those wires in the picture simply have cracks, no?
No problems yet on my 6/02 500E (knocking on burl)
BTW, which/how many harnesses do you plan to replace?
"If everything seems under control, you're simply not going fast enough" --Mario Andretti
1995 E500 street car
1986 Porsche 944 Turbo S track car