electrical purpose built items
Special parts for car-electric is a very interesting challenge.
The same is true for electrical special parts as for mechanical special parts - stay to originality as far as economically possible. For me it is very welcome when new modern technology is packed in 'original' parts which Yoou cannot very easy distinguish from the original part. I am thinking of the new electronic distributor which really looks like original. You have to look twice to recognise.
I do not want to start a discussion godd or bad - it is just a matter of taste. I think the best time to install technological 'upgrade' during a restauration.
To name one thing for an 'upgrade' for me was the intermittend screen wiper. Just for the sake of comfort.