You're as forgetful as I am.....;) I think I PM'd you, but maybe others can use it, since I posted it way back in page 50 or some such.
Picture and description below:
https://i.postimg.cc/zBXn2pDg/IMG-3539.jpg
The speed control IC board terminals from the left:
1. -Motor: connect the blue proximity sensor lead to that;
2. +Motor: connect the positive brown proximity sensor lead and positive lead from your motor to that (white cable with red and black wire is to my motor);
3. Black leads from the proximity senor and the negative lead from your motor wire nutted or soldered together & insulated.
4. The last two terminals on the speed control are for your 12V power supply....obviously positive wire to positive terminal, negative to negative, colors depend on your wire. Even a white double wire cable has some indication which is positive.....if not a color, a mark or texture change denotes positive.
If you can swing it, it's always best in the long run to use couplers of some sort so you can take things apart.
I used these after cutting off the white LED connectors first:
https://www.ledsupply.com/accessorie...led-strip-plug
Or if you have a wall wart power supply with a barrel connector already, you could mount one of these to you electrical box:
https://www.ledsupply.com/accessorie...enter-positive
When you get things all connected, any lead or copper within 8mm (a quarter inch) of the sensor is detected and turns the motor off.