I found a 2003 AMSAT thread from Wayne, W9AE, indicating that there was a source for purchasing extra 7 pin connectors for the G-5500 az/el rotor. That was Advanced Industrial Products, but with a long lead time.

Since then, has anyone found another source for these connectors (Nanaboshi NJC-207-PF), or another manufacturer?

Thank you, Joel Kandel, KI4T