Woohoo, I finally got a second to install my own shift knob with integrated kill switch!
Here are some pics:
Here is the OEM shift knob with my momentary switch zip tied to it. It worked well, but its time to upgrade! Next to it is my 3d printed custom shift knob with integrated switches. My shift knob actually has 2 switches integrated into it. One is a kill switch and the other will be a start switch. The starter switch isn't wired up yet though.
To make installation easier, I used some crimp on blade connectors.
And here it is installed. I wrapped the shifter shaft in some electrical tape to hide the wires.
I took it for a spin to church last night and back, and of course my commute in this morning. I really like it. I can't wait to hook up the starter switch!