Cjent will probably come on and answer this for you Tim. As well as being a Carrera Go dealer, he has a large D143 track that also uses D132 black box and chips, so knows most of what is going on in D143.
There is no dedicated Black Box for D143
But it's very easy to wire a BB to the D143 track
The advantage of the BB is it will allow you to run 6 cars instead of 3
But ! you will also need the D132 PSU, and the D132 controllers
You could thereafter access to more D132 options if you also use the D132 chips
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