DB-25 Color Mini-8
Mac XL Macintosh
2 TX- green 3 TX-
3 RX- white 5 RX-
19 RX+ blue 8 RX+
20 TX+ red 6 TX+
Other suggestions:
- Cut the cable about 3/8" up from the 25 pin connector so you can strip it
back and verify the pinout- you'll need an ohmmeter or a continuity
tester.
- Tin wires and connectors beforehand, of course.
- Use a soldering iron with a small tip and controlled temperature.
- Solder quickly so as not to deform the connector then clean with a good
flux remover.
- First slide the outer plastic piece over the wire. Next fan the braid
around the OUTSIDE of the metal shell and clamp it between the metal
shell and the hard plastic pieces, then force the outer plastic piece
over the whole connection.