3 black boxes

[driver]

Still chopping wires out this might be obvious to some of you but I'm trying to figure out what these 3 black boxes are.
First one says 4000A
2nd says Mazda 2096
3rd auto watch 139 Ti - I know this is an immobiliser

I want to get rid of the immobiliser, alarm and any unnecessary wiring. Which of these can I get rid of and how difficult is it? Car is 1.8 1995

[snowbird1]

Pictures of the 'mystery' boxes would be useful, I don't think the '95 had a factory immobilizer, you should be able to remove the aftermarket one and return the wiring back to standard.

[gwnwar]

This might help with the immobilizer it is not for the 139 for 279..
pfk.bluebox.co.za/portal/lgfdok_db1/UserFiles/SysDocs/bb_content_files/300/279%20000%20%20Installation%20Diagram%20Revision%201.pdf
There is an immobilizer relay bottom of diagram find this to see what system has been cut/split.

[driver]

3 black boxes turned out to be alarm, immobiliser and sensor for remote fob, I'm not sure how but I managed to strip my harness with alarm too. Was surprised how many wires are to do with the alarm. Great feeling when it all still works. If your unsure about stripping wires that's normal, my advice go for it. If I can do it you can too. Pictures to follow shortly