Engine Relay Panel Plug Question

[kentf14]

Hi All-
I'm in the process of returning my '73S back to the correct MFI engine and it looks like I'll need to do some engine compartment wiring changes. Can anyone tell me what the plug circled in the picture goes to on the engine and what it connects to on the car electronics?
(the panel in the photo isn't exactly correct for my car, it's just the only example I could find of the plug)
I'm trying to track down the correct parts before my engine transplant takes place in order to minimize my down time.

Thanks!!!

[jameshtaylor]

That looks like the 14 pin connector that carries almost all (or maybe all) the electricity from the front fuse panel to the rear of the car. You'll need an appropriate wiring diagram to sort everything out. Haynes likely has most of it.

[orange911]

I have a spare panel with plug and wiring if you need one. $75 + shipping and it will include a regulator and a couple of relays. No MFI ignition box though.

[mike curnow]

the engine wiring harness has the mate to that plug. i may have the whole harness

[gled49]

The plug circled accepts the main wiring harness for the car. The plug on the other end of the panel is for the engine. In later cars they eliminated the circled plug and hard wired into the relay panel. Gordon

[kentf14]

Aha. Much clearer now. I'll be getting onto the wiring next week once the old engine is dropped. I think at this point I've determined that I'll need the MFI pump relay and maybe a speed sensor. I've attached a (poor) shot of the panel as it stands in the car now. I'll be switching out the 6-pin CDI for a 3-pin unit. Anything obvious that I should start shopping for?
The help is much appreciated!

[kentf14]

the engine wiring harness has the mate to that plug. i may have the whole harness

Thanks Mike. I should be getting the harness with the original engine but will surely let you know if I need your help.