Wiring identification help please

[Chaps]

Hello all, I was doing abit of work on the car last night and have found some wires and have no idea what they are for. They are in the engine bay of my 1991 mk2 scirocco. they all run from the main loom which is attached to the bulkhead in the engine bay.

Within the 1 main engine loom run, there are 2 separate splits which contain:

1st main run;
green/black
black/yellow with a red clip
brown
black/yellow & black - connected to a grey plug
black/brown & black - connected to a brown plug
yellow
green/black with a spade connector
yellow/red

on the other run
black/yellow & black - connected to a white plug, but joined together
red/white- connected to a white plug
brown/black - to a plug with a rubber cover
brow/black & yellow/black - connected to a plug with a rubber cover

also there is one other wire from near where the coolant bottle is located, it is blue/black & black with a plug.

Not sure if some of these wires have been cut at some point so may be missing plugs.

Any help would be great as trying to understand what is / isn't required for my 16v conversion! Tried with the old rocco Haynes but its not very informative!

Thanks guys.

[Chaps]

Or even where the wires normally connect would do and I can work the rest out.

[go-for-it1]

Injection or Carb?
Green/Black with a spade goes to an oil temp sensor (if fitted) on the oil filter housing. The other end is tucked behind the fuse box and is only used if you fit an oil temp gauge to the centre console hole on right of ashtray.
Brown is normally Earth. If you don't get any other answers I will look at mine when I get home from nightshift.

[Chaps]

I am not sure what the car originally was to be honest! I imagine it was an injection 1.8, it's a gt11 version that's all I know.
Thanks for the ell, I am guessing the plugs on that loom part were for coolant sensors too.

If u don't mind taking a look when u get chance that would be great.

Thanks

[go-for-it1]

Hi, gonna be friday p.m I'm afraid if that's ok?

[Chaps]

Yeah man no probs at all.

[go-for-it1]

Ok, so I've had a look at mine and assuming yours was a GT2 with a carb before conversion I offer the following possibilities for the wires you mentioned:
1st main run
Green/Black - not sure, cant find it? Tell me roughly where you can see it.
Black/Yellow with a red clip - if this is by rad fan, it is not connected to anything.
Brown - Earth
Black/brown & black with grey plug - goes to grey sensor on 3 way water connection on front of head, sensor feeds the hedgehog heater in inlet manifold.
Black/brown & black connected to a brown plug - if the plug is red not brown then it goes to the red sensor on the same 3 way connection and feeds the auto choke on a pierburg carb.
yellow - if it goes to a rubber cover it goes to the pressure sensor on top of the oil filter.
green/black with spade - oil temp sensor as stated above.
yellow/red (should have a brown with it) goes to sensor on bottom of 3 way water connection for water temp.

On the other run it looks like they are all for the pierburg carb if they are located near the clutch cable and speedo cable bulkhead connection.

The Blue/black & black with a plug near the coolant tank is probably for the low level sensor on the brake fluid reservoir cap.

I hope this helps but if you want I can run mine over to you so you can do a side by side check, I am only in Blackburn.
Rob

[Chaps]

You sir are a legend!! Many many thanks for this.
It makes sense that some of it is for the carb, I hadn't even thought of this!
Looks like most of it, other than the coolant/oil sensors is redundant then.