Switch Wiring through firewall?

[SleeStack]

I need to run a power lead from the engine bay to under the dash, then out of the cab to an Aux fuel pump that fills the main tank from an aux tank in the bed. Sooo... .



Whats the best way to get from the engine bay to the underdash area with a wire? I checked the big rubber gromet that the main wiring bundle goes through and it looks like a bugger to get through. Any other suggestions? How about accessing the under bed area from the cab. There are some metal knockouts under the driver and rear passengers floor covering, anything else?



Thanks for the help,

 

[Bertram65]

There's a plastic plate on the firewall where the clutch would be on a stick, I drilled throught that and ran all my wires, there is a picture of it in my reader rig gallery.

 

[nickleinonen]

for those without the slushboxs', there is a rubber grommit where the shift cable for the auto's goes through. it is below and left of the clutch pedal [iirc?] pretty easy access and somewhat out of the way [i ran my wires through there and i haven't had any issues yet with it]

 

[Jengle]

I have a clutch and ran my gauge wiring through that rubber grommet. Just pop it out and use a razor blade or knife to cut the center out in the size you need for your wiring. Then use rubber silicone to seal it, and no problems. I plan on running my box wiring through there and just resilicone it to seal again. I tie wrapped the wires to the side, and it clears the clutch pedal fine.