window switch w/ NOS dry kit

Hi there,
I know this has been discussed big times, but I can't come up with a solution..:(
I have a NOS dry kit and a window switch. I have wired the whole kit except the infamous "yellow" wire. Now, where should I hook it up to? Should I connect it to the two solenoids ground wires? Or is there a ground wire on the nos relay?

please help me folks, I want to make my first ever nitrous run this weekend :D

Ok, I made a search about this. Now I know you must not connect the yellow wire to the solenoids directly as you'll fry the window switch.
But than, where's the ground path on the NOS relay?? :(

Thanks in advance!

NOS kits use the WOT switch to supply ground to the relay. You need to unhook the ground for that then put it to the window switch. The WS will supply the WOT switch with its ground only during the picked range you have.

Thanks BILL!!
I feel like a retard, I should've known that....:D