Whats the best way to get a power cable from dash to the battery?

[tojan19]

I'm putting in aftermarket heated seats. I'm going to put in a relay under the dash for the 12V switch and need to get a power cable to the battery/engine compartment fuse box. Anyway to pull it off w/o just drilling the firewall and putting in a grommet?

 

[edwx]

There must be a spot somewhere. There's stuff that penetrates the firewall. Just spend some time and carefully look. There has to be some sort of rubber boot somewhere. The guy that wired my remote start put a wire through. If I have time I look where he did it.

 

[tojan19]

Getting anything through that rubber boot is damn near impossible. I tried. I guess it's either make that work or drill a new hole.

 

[Joe Dirt]

Coat hanger? The boot from the ebrake? Poke a hole and pass thorugh? There are a few options... Not sure how the '06 is set up...