This harness is far better than the OEM version.  I made the first one for my own 968.  The main alt cable is 6-gauge tin-plated aircraft cable with Teflon (FEP) insulation.  The exciter and solenoid wires are XLPE-insulated and they are soldered and crimped at terminations.  This is a direct replacement.

Also available (cheaper) at the my site:  dcmachinist.com