Flyback Diode Circuit with capacitors

Other Hardware General Electronics
1

I salvaged a dc motor from an old toy and it has this circuit on the bottom. (attached)
I traced the connections with orange. The red circle marks a soldering connection between the pcb and the housing of the motor.
I know the main part is a flyback diode, but i dont know what those little things and the black warped things are.
My guess: the little things are capacitors( the are labeled c5,c6 and c7) and the warped things are resistors
But why are there so many capacitors? Does the flyback diode implicate that there is a right and a wrong way to connect the motor? And what does the soldering connection to the housing do?

Motor Schaltung.pdf (1.67 MB)

2

Hi James, Ill help you uploading jpg as part of message, a way to make the file easily readable
Cheers

Motor Schaltung.jpg
Motor Schaltung.jpg540×508 70.6 KB

Motor Schaltung.jpg
Motor Schaltung.jpg540×508 70.6 KB

3

If by 'black warped things' you mean the 2 things sticking up towards the left and right top corners of the image they are almost certainly inductors, there to block electrical noise. The things marked c are capacitors, also to remove electrical noise. I don't see a diode, just as space marked for a diode but with no diode fitted. If there is a diode then the polarity of connection to the motor can only be one way.