Outer Limits 4x4 Board

HELP!

I am trying to fit an Engine Watchdog thermo alarm to my wife's Magna. This requires that the cable from the thermocouple be run through the firewall into the cabin, but it is almost impossible to find a place to pass the cable through. Has anyone put an electrical cable into the cabin of a Magna? If so, where did you run it?

Your help much appreciated.

Moved to tech

just look for a rust hole, should be plenty of them

any of the gromets usually above the pedals use a flat blade screw driver to pass through the grommet or if your keen a knife but dont cut any wires in the grommet because you wont be able to repair them.