Measuring resistance below about 5 ohms realy needs a 4 wire meter to eliminate lead and contact resistence.
With a normal 2 wire meter you can guess lead resistance by reading with the leads shorted and taking that reading from the coil reading but you are still approximate.
With the points closed the current in the primary (low voltageside) of the coil is building up, when the points open this causes an abrupt change in the current and produces a high voltage in the secondary which breaks down the gas in tthe spark plug gap producing a spark and ignition. A bit simplified and no mention of the compromises required to make the whole thing work.
Yellow/black quadant only releases when clutch pedle is pull up past its normal rest position then quadtant can be moved back against its return spring.
Can be a 2 person job depending haw long your arms are. Then cable should easily fit.
The cable will be a sierra cable that is shortened.
The outer is standard and the inner is shortened by cutting the end off and swageing a new ferrul on the end.
Use the old cable as a guide as how much to shorten
Hot alternator after engine stoped enough to cool down is almost certainly the diode pack having a short.
Auto electrician should be able to repair, but a new replacement might not cost much more.
You need a pair of diodes,
One in each feed line.
Suggest 1N4001 from maplins, the white band end of each is connected together and to the side lights.
One diode is to the side light switch and the other is from the the fan relay.
I had this years ago on a vauxhall nova.
It turned out to be the inlet manifold gasket failing and allowing number 1 cylinder to suck in water which gave a nice steam cloud out of the exhaust.
The alternator has a negative connection that is often overlooked.
It is the body of the alternator and it connects by its mounting bolts, check for paint rust etc spoiling this connection.
The floor needs proper reinforceing where the bolts go through the floor.
I have 1inch angle iron spreading the load.
I have a bolt through the runner clamped with a nut then a second nut to a penny washer and through the floor to the angle iron where it has a further nut to clamp the angle firmly.
The 2 nuts either side of the floor allow some adjustment to get the seat level.
The angle iron is further bolted to the floor in several places spreading the load.
Having built my own drivers seat when copying it for the passenger side I found that the monocoque has the tunnel intentionaly offest to allow a reasonable width for the foot pedals and it did not fit in passenger side, mos needed.
Fairly small leaks in the exhause can have a big effect.
The lambda sensor is looking for no oxygen in the exhaust so a small leak brings some O2 into the exhaust and hence the lambda sensor.
As regards the oil leak you can either live with it or remove the head checking all surfaces are flat.
Leak in the exhaust before the sensor could draw in air.
Thus fooling the ECU into running rich.
Oil consumption could be a seperate fault and valve stem seals are a first port of call
Cam cover gasket is a posibliity for the oil between cam banks.