MG
The Classic Marque

Les, the power into your coil comes from the ignition switch. If you are on negative earth, this will be positive. Connect to the coil + terminal ( assuming they are labelled) The other will then connect to the dizzy (this last wire being the one I have mentioned as looking intact, but having an internal break concealed in the insulation)

Hi Les
In response to your earlier question I have fitted 2or3 Pertronix units converting from points and all needed the timing reset when started. From memory they did start but were running very rough until dynamically timed.
I’ve no experience of the make you have.

Pertronix note to ensure the leads within the cap need to be routed to avoid damage when the base plate moves etc. ...

Willy
Thank you.
How do I use the multimeter (settings?) to test the resistor/plug caps.
I’m still convinced it’s the ignition unit at fault so have ordered a replacement.
Might still try using points first, which terminal does the wire from the side of the distributor go to on the coil - positive? My car is negative earth. Is the negative then connected to earth?
Thanks

Yes fair/safe comment by them---but you've got resistor plug caps which makes your lead/cap combination into the same as using a resistor/silicone style lead---no issue there.

You can measure them (the resistor caps) with your multi meter. Later new ones usually measure at about 5k ohms, the older Lucas type used to be up to 10k so anywhere between 5k-10k would be fine-

willy

VCDS (previously Vag-Com) might be worth a look if you just want to read the codes.
https://www.ross-tech.com/vag-com/VCDS.php

My VW is older but it has worked for that on several occasions, best one being diagnosing an occasional stutter as a broken wire in the injector harness.

Funny, Willy - I had our very nice '73 BGT painted in Toyota's white #040. Man, was it white! I loved it on that car with the Minilite style (Performance) rims and new Webasto sliding sunroof. But it would be waaay too much on a TD. I do like the Snowberry option, looking at Tegler and other paint charts as we speak. John.

Both coils measured about 3.3 ohms.

Another interesting fact - spoke to H&H asking about HT leads. They said avoid copper core leads and use silicone type, apparently it’s what is recommended for any electronic conversion. If using copper then long term it can damage the electronic ignition module.
Yes I have copper leads, fitted when did conversion!!

Could be-
When you measured the coils, the blue one would have been roughly 3ohm-ish across the primary posts, can I ask what the other one measured--

What I find odd about the coils is :-
With the original one, after changing head gasket ran the engine twice up to temp, maybe 20-25 minutes each time. Did a 26 mile run. Did 32 mile run to club night. Only after that did engine give issues.
Changed the coil, started engine then after 25 minutes it spluttered and cut out. But after 10 minutes ran fine.
Did the same a few days later.
Is...

I have Hardi pumps in my TD and my Morris Minor. They are a great little pump. Hardi's customer service is the best you can get.
Regards
Declan