Inertia Switch
Hi Mr. Fitz. its been a while. Hope all is well.
I am the engineer for the assembly line that makes these switches.
I want to caution anyone on blindly installing one of these switches in any vehicle other than the one it is intended for. The R & D that went into designing this switch would consume 100s of gigabytes on your PC.
In short, each switch is designed to actuate when it undergoes a specific deceleration rate measured in Gs for a specific time duration measured in milliseconds.
You will not be able to know what the rates needed will be where ever you decide to mount the switch. The only way to know this is thru actual crash testing.
GNs typically give a rough ride. If you drive like a madman or on bad roads, you may end up with a switch that trips when you hit a pothole or just normal bumps.
There are several versions available that trip at varying levels.
Proceed at your own risk, I am not suggesting you do this.
If you still want to though, wire it into the fuel pump circuit and mount it near the rear of the vehicle. It needs to be mounted within the cabin or trunk not exposed to the weather. It should not be attached to a flimsy section subject to vibration or flexing. Ford PN 5L1T-9341-AA might work.
Good luck.
Bob