Passive PoE Cable Set CAB-1075

I have a passive POE that provides 12V to pins 4,5,8,7. Will the splitter end of this set intercept this power and send it to the Power plug or does the power need to via be injector cable?

Don’t know how your injector is wired but it will probably work?

Check the data sheet in the ‘Documents’ tab on the product page and compare that against the wiring for your injector just to be safe though.