Billy C.

Don’t forget how important that Inertia Switch is before driving your D. For those of you who don’t know the Inertia Switch does two things in the event of a collision. It sends a signal to the door lock controller to unlock the doors and it cuts power to the electric fuel pump.
http://en.wikipedia.org/wiki/Inertia_switch

Some idiot previous owner of my D cut the wires to the Inertia Switch threw away the Inertia Switch and the little white plug and connected the black/purple wire to the brown wire to get power to the pump.

Like Dave Graham says, get an Inertia Swtich with a painted white dot on it since that’s a sign it’s the proper one and is not likely to fail like yours apparantly did to the previous owner.