I have a MSD PN#8969 digital window switch for my nitrous. My car is a manual, and the nitrous only works in one gear. If I shift the circuit cuts off, I was wondering if this part is more for a automatic car since I let off when I shift and the circuit deactivates compared to an auto trans car that you keep the circuit on and do not let off of the gas.

 

I have this same switch in my auto and my buddy has it in has 5-speed and it works fine. it's controlled by rpms only .. double check and solder your connections