I have a 1993 Mustang Gt where I am converting to Holley Sniper EFI. I have already pulled out all the factory EFI wiring per an article I found on this webpage EFI to Carburetor Conversion.

That page is packed with information but I suspect that it isn't 100% correct for 1993 Mustang GT.

They mention a Black and a Grey 8 pin connector near the Brake Booster. In that area, all I see is a Dark Red 8 pin connector.

I...

1993 Mustang GT EFI to Carb (type) Wiring