Overheating voltage regulator coils

Another dummy question.The Lucas RB340 volt reg has 3 look like 1- 2 in coils on the back.”assuming” connections are correct how hot do thee coils get?

I found the document linked below to be especially helpful in my understanding of how these things function. Worth reading over a few times. Your specific type of control box is discussed beginning on page 25.

Wow, that’s just excellent! I saved it even though I will never use it.

Brought to my attention by @clivejer while my RF95 control box was giving me grief. Yes, a very good manual.

The Lucas Overseas Technical Correspondence Course is in ten sections, well worth downloading them all. Quite a few British car forum websites have them available.

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Thanks again.Seems like folks turn pale when you mention voltage regulator