Whats this plug for - vs mian wiring

[tezza]

Im looking at changing over my main wiring harness on my VS manual ute to one out of a executive as it has the wiring for the central door locking and things. Ive had a look at a wiring harness and it has some plugs which arent on my current wiring harness. Does anyone know what they are for? There's two of these plugs. One in the engine bay area near the fuse box and another just under the dash near the fuse box inside.

They look like some computer plugs although Im not sure what for.

Also, are there any issues if Im putting a automatic wiring harness in a manual T5 car? Im assuming there wont be any issues as Im changing the body wiring (lights etc) instead of the engine and ECU wiring.

 

[delcowizzid]

abs module under the bonnet by the looks

 

[tezza]

I was just looking in my Gregory's manual and it looks to be the ABS module plug. There is one on the interior side so Im guessing they are both for the ABS. If I use this wiring harness in a non ABS Commodore, will the ABS light be lit up?