Yes, correct.
The "Bosch" regulator in the article would not function if it is install on "Lucas" systems,
This is why you need to first modify the "Lucas" generator to operate as a "Bosch" unit.
The generators (dynamos) are all the same, basically.
The difference is withe the electrical wiring inside: The FIELD connections.
If you inspect the 2 schemes on the link, you can see that in the "Lucas" type,
The field coil is grounded at one end, and the other end is the (F) port,
(there is only 1 field coil in the BSA, so just ignore the 2nd..)
Whilst for the "Bocsh"- one side of the field is connected to the (D), (A brush)
And the other side also functions as (F) [Called (DF) for "Bosch"].
Please note that electronic regulators are not forgiving like the mechanical ones,
And if you connect it wrongly- it will probably burn,
So first you must check if your regulator is made to work at Lucas or Bosch configuration.
Usually there are dynamo diagram which comes with the reg'.
Once installed correctly, the electronic regulators are usually very reliable.
I use one for 10 years with no issues, but you must note:
1. You must run it with a battery, or at least a big capacitor, ("Battery eliminator")
2. A switch is needed, in order to disconnect the barrery when not in use,
Otherwise the battery would drain flat in 1-2 days, as the "Cut out"
On the electronic regulator is not a total "On-off" switch like on the mechanical
ones.
There are diodes preventing the flowback from the battery,
But diodes as a normal inherent leak back.