Resistors for injectors

[CrazyS13]

I searched and couldnt get a straight answer so here goes. When putting on resistor packs for low impedence injectors, which wires do they need to be on, the positive (going into injectors) or the negative (going out of injector). I just need to know if it will make a difference which wires they go on. Thanks for the help and thanks for reading

-John

p.s. please dont say to get the resistor packs out of honda, i already have resistors so i dont need them, thanks!