feeding cable thru firewall - Toyota Yaris Forums

yaris9876 · 08-05-2007, 07:36 PM

I need to feed 2 pieces of 4 awg,as thick as a little finger each, from the battery thru to the inside of the cab. I spent a
hour trying to find ANY place to get it thru. there doesnt seem to be any rubber holes except one small one in line with the passenger airbag and I dont want to use that.its too small anyway. the big bundle of wires that feeds thru that square tube is too filled up with wires to use it. Does anyone know the best way to get it thru. maybe an installer ???????
thanks....

lifthard1 · 08-05-2007, 08:54 PM

Drill you a hole by the ac drain and go buy a rubber grumant and if you want put some silicone around the wires after you run them

yaris9876 · 08-05-2007, 10:14 PM

where is the ac drain,,link a picture if possible thanks..

Keymaster · 08-05-2007, 10:26 PM

This isn't the AC drain but it's an idea on where to pass the cable.....
On the passengers side under the hood there is already a hole which is covered:

Inside the car on passengers side near the air-condition:

Vanderkitten · 08-06-2007, 01:56 AM

Yeah, to the left of the ECU if you're looking at the motor there is a pass-through to left that we used for foglight wiring.

sdmf · 08-06-2007, 03:30 AM

i went through the drivers fender and ran it through the door, works for me.

punch · 08-06-2007, 08:14 AM

inside passenger foot well, pull back carpet, you'll see where the ac drain goes, i drilled right next to it ( the steel is thin)primed the bare metal, placed a grommet in and ran my wire, then silicone the whole works...

Black Yaris · 08-06-2007, 08:26 AM

Quote:

Originally Posted by sdmf

i went through the drivers fender and ran it through the door, works for me.

that is actually very unsafe, the constant pinching of the wire in the door jamb my wear though the plastic sheeth causing it to ground out, and if you do not have it fused properly you will have a fire

ChinoCharles · 08-06-2007, 12:20 PM

Someone should do a nice guide on all the nooks and crannies we can fish wire through. Possible sticky?

*Astroman* · 08-06-2007, 12:33 PM

I was able to feed 2-6ga. cables through this hole in the firewall. I had to drill through the carpet though, but it's very concealed.

It is on the left side of the engine bay (facing the car) and is covered by a rubber stopper.

earljail · 08-07-2007, 12:15 PM

I chose to run a 4 gauge cable underneath the car, coming up through one of the grommets in the hatch floor. The feeding of the power cable through the firewall is the thing I hate most about doing car stereo.

IsLNdbOi · 11-13-2008, 04:37 AM

Quote:

Originally Posted by Astroman

I was able to feed 2-6ga. cables through this hole in the firewall. I had to drill through the carpet though, but it's very concealed.

It is on the left side of the engine bay (facing the car) and is covered by a rubber stopper.

Anyone else use this location to feed a power cable into the car? Will a 4 gauge power cable fit through that and would I need to put a new rubber grommet in that would seal that hole, but still fit a 4 gauge power cable through?

sportin83 · 11-14-2008, 12:47 AM

on my liftback there was aruber grommet behind the glovebox up high. came out on passenger side right above the pcm or ecm or bcm whatever is on the engine side of the firewall on passs side.

IsLNdbOi · 11-14-2008, 12:51 AM

Uh yeah, that's the one pictured in the quote in the post right above yours.

So:
For anyone who has used that hole in astroman's pic. above, will a 4 gauge power cable fit through that and would I need to put a new rubber grommet in, that would seal that hole, but still fit a 4 gauge power cable through?

sportin83 · 11-14-2008, 02:27 PM

yeah 4 guage should be no problem. i ran 0 guage through and had to drill it a little bit bigger and then silicone around it.

smofskra · 11-14-2008, 09:11 PM

Quote:

Originally Posted by sdmf

i went through the drivers fender and ran it through the door, works for me.

i also used this method and it works fine. just make sure you do NOT run it through the door hinge or you run the risk of cutting the wire when you open the door and getting a shower of sparks. (I did this in a 92 buick skylark, i speak from experience)

sportin83 · 11-14-2008, 09:28 PM

the door is a bad place. i would never recomend this i have seen cars burn to the ground because of poor wire maintenance like this. always run in firewall where it will not get pinched every time you open and close the door.

IsLNdbOi · 11-21-2008, 03:58 AM

Not sure if this one can be found in '08 and '07 LBs, but my 5-door '09 LB has a big rubber grommet behind the brake and gas pedals, under the carpet. My dealer routed my rear-view mirror's wire and temp. sensor through there.

08-05-2007, 07:36 PM	#1
yaris9876 Drives: yaris hatch 07 640K original m Join Date: Mar 2007 Location: usa Posts: 285	feeding cable thru firewall I need to feed 2 pieces of 4 awg,as thick as a little finger each, from the battery thru to the inside of the cab. I spent a hour trying to find ANY place to get it thru. there doesnt seem to be any rubber holes except one small one in line with the passenger airbag and I dont want to use that.its too small anyway. the big bundle of wires that feeds thru that square tube is too filled up with wires to use it. Does anyone know the best way to get it thru. maybe an installer ??????? thanks....

08-06-2007, 01:56 AM	#5
Vanderkitten Drives: 2007 Yaris Hatchback Join Date: May 2007 Location: Berkeley, CA Posts: 243	Yeah, to the left of the ECU if you're looking at the motor there is a pass-through to left that we used for foglight wiring. __________________ Dave V- Creator-Vanderkitten- Clothing for Women Who Kick Ass! Many thanks to our sponsors: Weapon-R http://weapon-r.com Megan Racing http://www.meganracing.com Les Schwab Tires http://www.lesschwab.com 317 graphics http://www.317graphics.com

08-06-2007, 03:30 AM	#6
sdmf Down With the Sickness Drives: 2007 yaris liftback Join Date: Feb 2007 Location: chicago Posts: 385	i went through the drivers fender and ran it through the door, works for me. __________________ Strength - Determination - Merciless - Forever

08-06-2007, 08:14 AM	#7
punch Drives: 2007 Yaris Sedan "D" package Join Date: May 2006 Location: Barrie, ontario Posts: 852	inside passenger foot well, pull back carpet, you'll see where the ac drain goes, i drilled right next to it ( the steel is thin)primed the bare metal, placed a grommet in and ran my wire, then silicone the whole works... __________________ out of respect for nutzoid, I changed my avatar.

08-06-2007, 12:33 PM	#10
Astroman Modded Moderator View User's Garage Drives: 07 Toyota Yaris, 71 Galaxie Join Date: Mar 2007 Location: Wenatchee, WA Posts: 3,670	I was able to feed 2-6ga. cables through this hole in the firewall. I had to drill through the carpet though, but it's very concealed. It is on the left side of the engine bay (facing the car) and is covered by a rubber stopper. __________________ Please visit my online store for computer stuff and Official Yarisworld decals!

08-05-2007, 08:54 PM	#2
lifthard1 Drives: Black LB Join Date: May 2007 Location: alabama Posts: 89	Drill you a hole by the ac drain and go buy a rubber grumant and if you want put some silicone around the wires after you run them

08-05-2007, 10:14 PM	#3
yaris9876 Drives: yaris hatch 07 640K original m Join Date: Mar 2007 Location: usa Posts: 285	where is the ac drain,,link a picture if possible thanks..

08-05-2007, 10:26 PM	#4
Keymaster Drives: Yaris '06 1300cc Join Date: Dec 2006 Location: Sweden Posts: 22	This isn't the AC drain but it's an idea on where to pass the cable..... On the passengers side under the hood there is already a hole which is covered: Inside the car on passengers side near the air-condition:

08-06-2007, 12:20 PM	#9
ChinoCharles Banned Drives: LB Join Date: Jul 2006 Location: OH Posts: 7,787	Someone should do a nice guide on all the nooks and crannies we can fish wire through. Possible sticky?

08-07-2007, 12:15 PM	#11
earljail Drives: 07 Yaris Hatch 5speed Join Date: Nov 2006 Location: BC, Canada Posts: 146	I chose to run a 4 gauge cable underneath the car, coming up through one of the grommets in the hatch floor. The feeding of the power cable through the firewall is the thing I hate most about doing car stereo.

11-14-2008, 12:47 AM	#13
sportin83 Drives: 2008 blazing blue yaris LB Join Date: Oct 2008 Location: central IL Posts: 131	on my liftback there was aruber grommet behind the glovebox up high. came out on passenger side right above the pcm or ecm or bcm whatever is on the engine side of the firewall on passs side. __________________ http://cardomain.com/ride/3151056 mods: custom sub box, i hit 141.4 db, new speakers, double-din nav, foglights, cruise, CAI, strut brace, under car braces, short antenna, remote start, alarm, actuators in doors and hatch coming soon: window tint, custom sub grills, tach and........

11-14-2008, 12:51 AM	#14
IsLNdbOi Drives: Polar White - 5 Door '09 LB Join Date: Aug 2006 Location: Las Vegas, NV Posts: 1,285	Uh yeah, that's the one pictured in the quote in the post right above yours. So: For anyone who has used that hole in astroman's pic. above, will a 4 gauge power cable fit through that and would I need to put a new rubber grommet in, that would seal that hole, but still fit a 4 gauge power cable through?

11-14-2008, 02:27 PM	#15
sportin83 Drives: 2008 blazing blue yaris LB Join Date: Oct 2008 Location: central IL Posts: 131	yeah 4 guage should be no problem. i ran 0 guage through and had to drill it a little bit bigger and then silicone around it. __________________ http://cardomain.com/ride/3151056 mods: custom sub box, i hit 141.4 db, new speakers, double-din nav, foglights, cruise, CAI, strut brace, under car braces, short antenna, remote start, alarm, actuators in doors and hatch coming soon: window tint, custom sub grills, tach and........

11-14-2008, 09:28 PM	#17
sportin83 Drives: 2008 blazing blue yaris LB Join Date: Oct 2008 Location: central IL Posts: 131	the door is a bad place. i would never recomend this i have seen cars burn to the ground because of poor wire maintenance like this. always run in firewall where it will not get pinched every time you open and close the door. __________________ http://cardomain.com/ride/3151056 mods: custom sub box, i hit 141.4 db, new speakers, double-din nav, foglights, cruise, CAI, strut brace, under car braces, short antenna, remote start, alarm, actuators in doors and hatch coming soon: window tint, custom sub grills, tach and........

11-21-2008, 03:58 AM	#18
IsLNdbOi Drives: Polar White - 5 Door '09 LB Join Date: Aug 2006 Location: Las Vegas, NV Posts: 1,285	Not sure if this one can be found in '08 and '07 LBs, but my 5-door '09 LB has a big rubber grommet behind the brake and gas pedals, under the carpet. My dealer routed my rear-view mirror's wire and temp. sensor through there.

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