E34 E32 Clock Case

Hi,i wanted to give my old boardclock from my BMW E34 a new life. Therefore i designed a case and also added two breakthrougs in the back for the switch and 12VDC adapter. equipment:3X Jumper cables (you can gahter them from old PC hardware or Amazon)1X DC Socket (i added a picture of it)1X on/off switch (i added a picture of it) than you have to solder all together: You have to connect GND to PIN 4 and the + Wire without switch to the Clock Pin 9. The secound + wire after the switch goes to the