Finally got my SSD set, and immediately opened a car : the decoder board seems to be glued with CA to the two support clips, and the output wires are directly soldered to the motor terminals - nothing dramatic, but it's a nuisance
Decoder dimensions are 32.5 x 15 mm , thickness is about 4 mm except where you have the round "thing" on one side and something else on the other : 10 mm there
And then there's the LED base, just 15 x 6 mm
Was trying to read what's on the chip(s?), but it's way too small : anybody got a magnifying glass ?