Power Wire through Firewall

[04Stanger]

I know its been covered, searched already, but cannot find any pics of how to run power wire through firewall in existing grommet. I would rather not drill, can someone post a pic of the grommet or tell me where the main wiring harness comes in.

Thanks

 

[bynummustang]

Are you doing this on the 04 or fox?

When I did it on my 90, the gromet to the left of the steering column(left when sitting in driver's seat). I took a knife and made a +(plus sign cut) and treaded the wire through.

Not hard, but easier if you have small hands.

 

[04Stanger]

This is on a 2004 GT 5 spd. I heard there is an existing grommet that I could run it through, I'm just not sure where to look.

 

[bynummustang]

I haven't looked under the dash on a newer mustang. Ship your car here, and I'll do it.



Seriously, just lay on your back, look, and find a gromet, closest to the fender. Once you find it, get under the hood, make sure you don't cut anything. Get a knife, and cut a plus sign.

 

[Y2K_MustangVert]

There will be a huge rubber grommet to the left of the steering shaft. As stated above, simply cut an "X" or "+" in this with a razor blade, and run the wire through it. Just make sure you go from the inside of the car out, because it will not work the opposite way.

 

[KAILUAZ]

There will be a huge rubber grommet to the left of the steering shaft. As stated above, simply cut an "X" or "+" in this with a razor blade, and run the wire through it. Just make sure you go from the inside of the car out, because it will not work the opposite way.

Thats where I ran mine, I have a 2ga. and 4ga. going through there. I used a drill bit, but be careful you dont want to drill into your wiring harness!!

 

[BooWFO]

There is also one on the passenger side you prolly will not be able to find it from the inside. but you can see it from the engine compartment. I had to fish the lines from the bay into the passenger compartment but it worked.