Hello,
to complete the wiring informations, I’d like to add that together
with the red (V+) wire, in the same spot are also soldered the
“other” single wires coming from both the steering magnets. The wires
can be distinguished from the ones going to the L and R pad because
they’re “stained” with white paint.
All the “tiny wires” are very difficult to solder: you may find that
even if the wire is firmly soldered, it apparently does not make
contact: this is because they’re painted with an almost invisible
insulating coat, that you may need to scrape off…