Someone take a look at my diagram i made. I think it is overly complicated. The harlan window switch kinda threw me off, in the fact that it is a ground activation switch instead of a 12v source switch. Meaning when I am inside the rpm window the dashed black line becomes the ground source for external relays. The "hidden button" is probably gonna be my fog light button since my car didnt come with fog lights. The key switch, isnt the engine ignition switch, it is a seperate key switch i bought, so my nitrous cant be used unless u have a key. The key switch has 2 settings, on (arm nitrous/bottle heater) and start (momentary switch for purge)

The wiring instructions for the window switch say:

"Black Wire (dashed black on diagram) – this is the switched ground from the module. A connection to ground is made through this wire whenever the output of the module is “ON” (inside the window)

When driving external devices, there is a maximum current that the module can handle. It is small. To ensure proper operation and to avoid damage, use the black wire to control an external relay.

DO NOT try and directly ground external lights or solenoids with the module, you will fry it!"


^that complicates stuff