The Red connector cable for the OEM stepper motor (71-013099-01) has been obsolete. The only option is to purchase both the strain relief, the Red housing and make the cable yourself. Both the Red housing with metal inserts and the strain relief can be purchased with Tyco Amp part numbers.
Red Housing with metal inserts:
Tyco AMP part#641534-8
Tyco AMP part#643075-8
These parts can be purchased from www.Digikey.com.