one for the wiring gurus
 

Please see here so you understand what i'm building.
https://www.miataturbo.net/meet-gree...eeds-uk-81460/

I have a Megasquirt PnP but as its a race car i only need, ignition and the fuel injection side of the loom.

I haven't started to remove the main loom yet as i'm still fighting rusty nuts and bolts, Engine is out though and all the fuel ignition has been labeled up.

Is the whole loom a one piece item or is there a plug connection to separate say front and back?

I'm trying to get a heads up on what i'm going to do. I don't want to use the entire loom as i bet there is just way too much of it?

Cheers Paul

If you're going to make your own harness, there's no real point to a PNP, though...

Engine harness for the most part should be separate.

I never said i was going to make my own harness?

What year car? The wiring harnesses are different between all the different years.

If you're stripping everything but fuel and ignition from the engine harness, then you kindof are making your own harness.

Its a 1994

Here is the wiring diagram for the 94 miata. The one problem with the 90-97 miatas is that all the cars wiring is built into 1 harness. I do not know where the wiring diagram for a MSPNP is. I assume you could look on DIY site and possibly find it, or open up your case and figure it out.