Single Supply Op-amp PSU Wiring

[ss808]

I have a question about the PSU wiring for a single supply op-amp on this circuit layout:

I know the -12 volt line from the power supply must be grounded, I just want to make sure that the line (-12v) is sent straight to the chassis ground/earth connection and not through any other pathways first. Any help would be greatly appreciated, thanks!

 

[Arty]

i think you should draw what you want to achieve first, from your post it seems you may commit a verry serious error. better correct in on paper first...