I need to get a 3/4 inch conduit through my firewall in the next few hours--can anyone please tell me where I can find a big preexisting hole??

 

What's it for - amp power wire or something?

The quick and dirty way that looks like *** is going through the speedometer cable hole.

There are no pre-existing unused holes in the firewall. Small wires you can run through the wiring harness grommets, but you may be better off drilling a hole and installing a grommet for something that large.

Dale

 

Oh boy. Where am I goign to get a 3/4 inch drill bit?

It's for a two gauge cable that goes back to my second battery in the hatch... it has this conduit

 

At lowes, HD any machine tool supply house

 

Do you think it'll fit a standard drill?

 

Buy a "Reduced Shank Bit"

 

Use a hole saw and it will come out allot cleaner. While your at the store pick up a grommet as well.

 

Just use a 3/4" knock-out punch and it will be cleaner still.