how to run a wire through the firewall???

[m.dystynkt.m]

im posting this for my bro so i dont know exactley what hes doing..he just yelled up to me to post this for him..i think its for one of his gauges, he has to run a wire and he cant figure out how to get it thru the firewall.. help:

[beatniks325]

(not laughing at you, but funny post....)

yell down you can go through a hole under the carpeting below the glovebox or i think there is a space to go through near the steering column.

[Balthazarr]

You want info on a method or a routing?

[m.dystynkt.m]

You want info on a method or a routing?

just a spot to go through

[Bassmaster]

Heres a pic of the spot to run the wire through .

[live2roll]

Heres a pic of the spot to run the wire through .

did you have to drill that hole? and for some reason i cant locate that on my car althought i know the area right where the pic is at. I just wanted to simply run a thin wire (18gauge) thru the firewall. need at little more info then just a point tho like what do i need to remove to get to the hole and what not (if that makes sense). um yeah any help is appreciated though right now i just have some wires sittin in my cabin waitin to be routed.

[Balthazarr]

I would say look for the grommet where the throttle cable goes through.
I think 18 gauge would fit.

[ArcticFox]

From memory ( while back), there is a hole under the glovebox area carpet, against the firewall. You will need to pull back the carpet. On the drivers side there is really only two options that I could find. 1, steering cloumn gromet, 2. fuse box gromet (this will require you to pull out the fuse panel (in the engine compartment) to get to the wire).

[G. P. Burdell]

If you have an automatic, there's an oval-shaped hole a few inches above the socket for the clutch stop. I presume that it's usually occupied by the clutch hydraulics on a manual.

[live2roll]

i have a 5speed. im going to try to find that hole under the carpet i guess. that seems to be the easiest of the bunch so far.

[captainM3]

you should probably use an existing firewall hole since it's sealed with paint rather than drill your own.
Just tap through the existing hole's plastic plug.

[paul e]

Heres a pic of the spot to run the wire through .

Bass... Is that hole drilled, or does it exist, or was it used by a screw? Is it Driver or Passenger side?

[mlytle]

passenger side footwell, up behind the glove box, all the way to the side of the car is a rubber grommet with a number of unused holes. easy to see if you look at it from the engine side. look under the "tray" for the positive battery post.

[argento]

This is another option....on the driver's side, under the dash where the cables run through the firewall and into the fusebox, there are these round semi-punched divets in the plastic. I used a sharp pointed object to punch holes around the diameter and then used a tiny flathead to finally punch it out completely. I ran wires through there and into the fusebox compartment.



EDIT: Oh, the picture shows the sharp punches I made around the diameter of the circle. Another round untouched divet is shown below and to the left of the one I modified.

jjr

[Rob1547]

Sorry to bump this from way back, I feel it may possibly help others. I just wanted to say THANK YOU, Argento, for your comment about the plastic semi-punched holes on the plastic behind drivers side footwell.

Spent a LOT of time trying to get a wire through the factory harness opening on my 2001 Z3 but just wasn't going to fit, and I didn't want to damage anything. (Basic dashcam fuse-tap type application.)

Almost through in the towel until I saw those punches and found your post. I'll be cancelling my installation appointment and spending more time with my family flying in for Thanksgiving. Thanks a million sir.