engine bay sensors and wiring

Good evening all,   I wonder if anyone would be so kind as to take a peak at their engine bay and give me some pointers with below wiring,   In particular a newer GTI Cabriolet if possible,   mines a 92 GTI

Briefly,  I bought an old Cabriolet GTI a month or so ago that had been sat up in an old farm unit for 3-4 years,  the car had previously had a KR 16v running bike carbs conversion, the engine had lost compression on no.3 and the owner had taken it to his unit, dropped the engine and gearbox out complete,  sourced a replacement KR 16v, sat it next to the car and it had sat like that until I found it.   I've got it home fitted the engine replaced clutch cam belt etc and got it running all be it a little rough and rich, but well enough to get it to a garage for tune and test.
Anyway, the point of this post is I'm left now with unlabelled wires and sensors on the engine not connected, and as I didn't take it apart its a bit of a puzzle for me,  I've worked out most important things but I have the following left and can only find conflicting info online.   Oh and I should mention all the old injection plugs are all tied back out of the way from whenever the conversion was done,  so I'm assuming what I have left should go somewhere.
here goes

The sensors I have that need a wire are -
2 spade connectors on oil filter housing, front and rear,
Front -      I believe this is blue/black wire ??
Rear -       I thought was green wire, but found conflicting info online saying yellow also
3 spade connectors underneath Distributer on side of head around water pipe,  (when looking from dist end)
bottom left -      I thought was the yellow/red wire for water temp??
top left -
top right -
2 pin plug below distributer bottom right of water pipe
I have 2 different plugs spare that could go on here -
- brown 2 pin plug with a red/black and a green/white wire
- blue (could be green maybe) 2 pin plug with a brown and a red/white wire

The wires I have spare are -
- blue/black.    (suspect above oil filter)
- green/black
- yellow
- brown/white.   (this one has been cut, so may not be needed after conversion)
- blue/white.  (this is coming from distributer part of loom and has also been cut)
and the two plugs mentioned above,  brown and blue(green)

Also there is one more wire I can't see if possible to reach anything so probably an aftermarket thing thats been removed,  its blue with a white clear single pin plug on the end and is coming from the positive loom next to battery.

Any pointers for any of the above wires to help me fill in the blanks would be very much appreciated,   searching online if frying my brain!! haha

Regards
Wilson

For the oil filter housing on a 16v you should have 2 big pressure switches, 0.3 bar blue or brown and 1.8 bar yellow. these have yellow and black/blue wires, which way round depends on the wiring loom, used in the conversion, mk1 and mk2 have them opposite. can try it one way, and if oil warning system goes nuts swap them

3x small black sensors on the side are water temp, yellow/red to the sensor top right, blue/white for ecu if using the kr one bottom left. top left would be green/red wire for the isv control unit if it was in there, but if its on carbs then its not needed. you can unscrew this sensor and keep it as a spare, the hole is blind so no coolant will come out.

2 pin plug bottom right is for the kjet 5th injector themoswitch, if its on carbs again you can ignore it. this goes into coolant so you need it in there, or fit a blank from an abf engine

you should have a small white sensor on the rear of the head distributor side, this is oil temp sensor for the MFA.

- blue/black - oil pressure switch
- green/black - oil temperature
- yellow - oil pressure
- brown/white - earth to side of head (crimp a ring terminal on it)
- blue/white - ecu temp sensor

brown 2 pin plug with a red/black and a green/white wire is the 5th injector thermoswitch plug, not required on carbs. the green 2 pin plug is for the kjet warm up regulator or aux air valve, ditto