What are these Connectors called??

Mattax said

I'll take back that red X if you delete the black should always be ground.
While most ground wires in the car are black, the most important feed wires in the harness are also Black.
To remember this, think of it like house wiring. Black is a hot.

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Thanks for the information. I have the Molex Pins ordered and will report back when they come in on how well they work.

What I am doing is a little different but should be pretty nice when complete. This car is going to be a Street-Strip/ProStreet Build. I am doing a full EFI Conversion on it and going with a Holley Super Sniper XFlow system. I am also using their Hyperspark Ignition, Coil and Distributor on it.

When I got this car, The wiring was the worst I have ever seen. Step one was to rip out every wire in it. I did leave the Harness for the Headlights and turn signals in tact as well as the Harness to the rear of the car as those had not been butchered. (First Picture is car as it was when I got it)

I then built a custom panel and harness to be mounted Inside the firewall in the Passengers side. This panel contains the Fusebox, Ignition Box and MSD Solid State Relay to be used for the Nitrous system. (Second Pic)

Now I am terminating the custom Harness to plug right into factory harnesses that I left intact (Steering Column (Yes I replaced the one in the first picture), New Firewall Connector, Connector to Rear Lights and Connector to Brake Lights.)