My kill switch is mounted under the steering wheel, just to the left in the corner of the panel that you'd remove to get into the wiring around the fuse panel in a 94 civic. I can't see it from where I am sitting, but it's near my left knee. I used a heavy duty toggle switch from the hardware store. At first I had a momentary switch in there from Radio Shack, but I did not trust it. It seemed too cheaply made for such a serious job.
