I ve been folowing the red/Black 12v switched that is missing at the fuel pump relay and it ' s mind boggling. It comes out under the battery then goes over the engine on the bulkhead then goes back in the car above the pedals and then (whereas I thought it would plug in somewhere under the dash ) it goes down the driver footwell panel and then goes towards the rear of the car under the door sills... I am begining to suspect it goes to the inertia switch in the spare wheel compartment. But I checked that switch and there is no wiring arriving at it. I assume it was deleted when the MSD wiring loom was installed. I m baffled.