Electrical connector repairing

I'm trying to locate the individual male and female pins found in the connectors throughout the electrical harnesses in my 78 280. I believe the manufacturer may be Molex. I know there are insertion/removal tools and various sizes of these pins. Has anyone found a source for these items? Perhaps a listing of the different sizes and locations? The connectors I'm concerned with are under the dash and a few of these pins have corroded and broken but the plastic connector housing and wiring is in fine shape. It would be so easy to remove the bad pins, cut and recrimp new ones on have a new connector.

Any help would be appreciated, I'll keep researching and if I learn anything I'll certainly pass it on.