[Mk2] [Turbo] What re these wires for?

[markstevieandmads]

As per pic really. I have one spade connector with blue wire, and 2 multiplugs.

Im sure the one with the brown wires went to a sensor in the old cat that was removed and replaced with a decat. I guess i can just leave this unplugged?

But im unsure of the other two.

[Bear87]

The single spade connector is likely a lamda sensor if it's a rev1 or 2 as rev 3 onward were 4 wire (I may be corrected) only other plugs in that area are air con pump and intercooler fan.

[markstevieandmads]

The spare isnt the lamda as got a connector for that already. I wonder if its an earth for somewhere.
I think you maybe right in the intercooler fan and air con as ive temoved both of these so wont be needed now.

[Bear87]

From factory you have a pre cat and post cat sensor both single wire. I don't know of a earth wire that runs into the factory loom but if your wiring is anything like mine then anything is possible
I have my air con removed too and every time I see the plug hanging around it throws me!