1978 LT28 2.0lt petrol

Can anyone tell me what the brown and the black and blue wire in the photos are and where they should be connected. The connector with the black and blue wire is paired with a black wire in the connector.

Basically the red wire is one I've run from the ignition as a temporary fix as the immobilizer had cut the power to the coil. I've now removed the alarm and immobilizer. I have removed all the wiring and tried to put everything back to original using the wiring diagram, thought it would now be a matter of removing the red wire I installed and putting the brown wire in place but if I do that the vehicle starts but I can't turn it off with the key have to pull the wire off to stall it.

Currently I have two green wires on the -ve of coil that emerge from the loom. 2 blacks on the positive. One runs to a small capacitor thing under the ballast resister. The other comes out of the loom onto the ballast resistor and then on to the coil.

Any Help much appreciated.

Wiring is a pain in the ass on older vehicles, cos you don't know what has been changed.
I'd start with the wiring diagrams from the tech section or Haynes manual.
Ignition on should give power to coil and autochoke, you obviously have permanent power as well, probably from a wire to the alarm/imobiliser.
If you test the wires it may not be too hard to sort out, just tape up any extra live feeds.
Also try googling the alarm you might find a wiring diagram which helps.