In order to modify a standard 32k RAM pack to produce a test pack for use in System Test, certain wiring must be connected from the chip to the card connectors as follows:
| 32k RAM Chip | Card Connector |
| A12 (pin 2) | wire to A17 (pin 36) |
| A13 (pin 26) | wire to A18 (pin 37) |
| A14 (pin 1) | wire to A19 (pin 38) |