where to pass thru the firewall

510z · 05-02-2009, 12:34 PM

for hooking up the power wire for my amp. does anyone know the best way to get it thru the fire wall. I havent taken the battery out yet to see if there is a hole in there.

EDIT: answered my own question. there is a rubber cover northwest of the battery. looks like all the wires pass thru there. if your creative you can slide the power wire thru the cover and it will look like it came from the factory that way. took all of about 5 min once i figured it out.

JerryK · 05-02-2009, 06:21 PM

I don't see it. Is it toward the center of the car or in the battery compartment?

510z · 05-02-2009, 06:33 PM

take off the battery cover. then take off the surround for the battery cover. then take off the black plastic piece north of that (the one at the bottom of the windshield. its right there. the little plastic clips just pop off with a screwdriver and the squishy thing that runs the width of the car clips on too. just pull

Jeff Smith · 05-02-2009, 07:26 PM

NOT BEHIND THE BATTERY!!!! The Perferct spot on all 350's 370's G35' G37 is on the Drivers side below the brake booster! There is a Knock there behind the foam on the fire wall. Here are pics

FUSE HOLDER MOUNTED TO BATTERY BRACKET.

Upgraded 4 Ga ground.

4 Ga power loomed and passing thru a 1/2" snap in grommet. Then silconed to prevent water and wind to pass thru.

Enjoy Guys!

david712370 · 05-03-2009, 02:57 PM

Thanks Jeff. i saw this earlier but wasn't sure if they were the pictures you were referring to. I am assuming the first picture is the upgraded ground for the battery. Did you also replace another ground?

Jeff Smith · 05-03-2009, 03:01 PM

Not on this system, the voltage gauge in that stays above the 14V marker now all the time since the ground upgrade!

LinPark · 07-01-2010, 12:47 PM

Just for those interested, here is what that same space looks like on a 2010 6MT:

Very little room to work there - not even sure the hole is actually usable given all the hardware that seems to attach to the firewall at that location on a manual transmission.

Liquid_G · 07-01-2010, 12:49 PM

behind the battery is way easier.. and plus the wire stays hidden under the battery cover.

2004YZFR1 · 07-01-2010, 09:40 PM

I used the spot under the brake booster on my auto and it was real easy to fish the 4ga. over to the battery. I didn't have too remove any of the covers either. The manual looks like it would be a bitch to get to though. I guess it depends on which trans you have?

LinPark · 07-01-2010, 09:47 PM

Quote:

Originally Posted by 2004YZFR1

I used the spot under the brake booster on my auto and it was real easy to fish the 4ga. over to the battery. I didn't have too remove any of the covers either. The manual looks like it would be a bitch to get to though. I guess it depends on which trans you have?

To be honest, I looked really hard today trying to find that grommet on the driver side and I just don't see it. But I did find the main feed on the battery side and it looks like a piece of cake to feed a 4 gauge cable through there. That's my plan of attack for now.

Does anyone have a picture of how they attached the amp wire to the positive terminal?

bigaudiofanat · 07-01-2010, 10:08 PM

Quote:

Originally Posted by Liquid_G

behind the battery is way easier.. and plus the wire stays hidden under the battery cover.

X3 for this location much easier and much cleaner.

jikhead · 07-02-2010, 02:23 AM

Quote:

Originally Posted by LinPark

Just for those interested, here is what that same space looks like on a 2010 6MT:

Very little room to work there - not even sure the hole is actually usable given all the hardware that seems to attach to the firewall at that location on a manual transmission.

You are correct and the 2009 manuals are the same as well. I attempted this back in January when someone else said to use this spot, but it was virtually impossible to get to. The original poster is correct in that there is an identical firewall plug behind the battery that can be used. I think this one is more practical as it was easier to get to and requires less wiring to run in the engine bay.

SlikNik · 07-02-2010, 08:34 PM

Quote:

Originally Posted by LinPark

To be honest, I looked really hard today trying to find that grommet on the driver side and I just don't see it. But I did find the main feed on the battery side and it looks like a piece of cake to feed a 4 gauge cable through there. That's my plan of attack for now.

Does anyone have a picture of how they attached the amp wire to the positive terminal?

Not sure why you couldn't find the grommet if you have the auto, but in this video you will see it clearly. Much cleaner shooting your 4 guage through it than jamming through the boot on the passenger side.

Video#5 Audio Install In a 2009 370Z on Vimeo

Here is the link to the terminal picture you requested.

O.K. let's see em

LinPark · 07-02-2010, 10:18 PM

Quote:

Originally Posted by SlikNik

Not sure why you couldn't find the grommet if you have the auto, but in this video you will see it clearly. Much cleaner shooting your 4 guage through it than jamming through the boot on the passenger side.

Video#5 Audio Install In a 2009 370Z on Vimeo

Here is the link to the terminal picture you requested.

O.K. let's see em

I have a manual - that shot up above shows that area on a manual transmission and it is far from clear.

But thanks for all your videos and those pics of the connection to the battery - that's just what I needed - I assume you had to alter that red casing that fits over everything so it can close with the new amp wire connected - I found another thread as well that shows a similar connection setup and altered red casing.

Thanks again SlikNik - I probably wouldn't even think about doing this myself if it hadn't been for your videos - wonder how many people you have inspired/assisted with those.

cmmonte92 · 07-03-2010, 10:33 AM

Quote:

Originally Posted by LinPark

I have a manual - that shot up above shows that area on a manual transmission and it is far from clear.

But thanks for all your videos and those pics of the connection to the battery - that's just what I needed - I assume you had to alter that red casing that fits over everything so it can close with the new amp wire connected - I found another thread as well that shows a similar connection setup and altered red casing.

Thanks again SlikNik - I probably wouldn't even think about doing this myself if it hadn't been for your videos - wonder how many people you have inspired/assisted with those.

True, I just finished installing my system last week and watched every single video on this site (at least twice) to make sure I did it right. Good stuff, from some very thoughtful people.

I also had to go through the boot behind the battery for my amp power run; getting to the that rubber plug on the driver's side was damn-near impossible.

05-02-2009, 12:34 PM	#1 (permalink)
510z Enthusiast Member Join Date: Mar 2009 Location: Phoenix Posts: 328 Drives: 09 370z Blue M6 Rep Power: 16	where to pass thru the firewall for hooking up the power wire for my amp. does anyone know the best way to get it thru the fire wall. I havent taken the battery out yet to see if there is a hole in there. EDIT: answered my own question. there is a rubber cover northwest of the battery. looks like all the wires pass thru there. if your creative you can slide the power wire thru the cover and it will look like it came from the factory that way. took all of about 5 min once i figured it out. Last edited by 510z; 05-02-2009 at 01:38 PM.

05-02-2009, 07:26 PM	#4 (permalink)
Jeff Smith Base Member Join Date: Apr 2009 Location: Atlanta, GA Posts: 96 Drives: The ladies crazy Rep Power: 285	NOT BEHIND THE BATTERY!!!! The Perferct spot on all 350's 370's G35' G37 is on the Drivers side below the brake booster! There is a Knock there behind the foam on the fire wall. Here are pics FUSE HOLDER MOUNTED TO BATTERY BRACKET. Upgraded 4 Ga ground. 4 Ga power loomed and passing thru a 1/2" snap in grommet. Then silconed to prevent water and wind to pass thru. Enjoy Guys! __________________ Jeff Smith Autosound Specialist Atlanta, GA

05-03-2009, 03:01 PM	#6 (permalink)
Jeff Smith Base Member Join Date: Apr 2009 Location: Atlanta, GA Posts: 96 Drives: The ladies crazy Rep Power: 285	Not on this system, the voltage gauge in that stays above the 14V marker now all the time since the ground upgrade! __________________ Jeff Smith Autosound Specialist Atlanta, GA

07-01-2010, 12:49 PM	#8 (permalink)
Liquid_G A True Z Fanatic Join Date: Aug 2009 Location: Chicago Burbs Posts: 1,439 Drives: 09 370z Supercharged Rep Power: 43	behind the battery is way easier.. and plus the wire stays hidden under the battery cover. __________________

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05-02-2009, 06:33 PM	#3 (permalink)
510z Enthusiast Member Join Date: Mar 2009 Location: Phoenix Posts: 328 Drives: 09 370z Blue M6 Rep Power: 16	take off the battery cover. then take off the surround for the battery cover. then take off the black plastic piece north of that (the one at the bottom of the windshield. its right there. the little plastic clips just pop off with a screwdriver and the squishy thing that runs the width of the car clips on too. just pull

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LinPark A True Z Fanatic Join Date: Jan 2010 Location: Columbus, OH Posts: 1,077 Drives: '17 Camaro 2SS A8 Rep Power: 23	Just for those interested, here is what that same space looks like on a 2010 6MT: Very little room to work there - not even sure the hole is actually usable given all the hardware that seems to attach to the firewall at that location on a manual transmission.

07-01-2010, 09:40 PM	#9 (permalink)
2004YZFR1 Enthusiast Member Join Date: Apr 2010 Location: Las Vegas Nevada Posts: 308 Drives: 09 370Z yellow,auto Rep Power: 15	I used the spot under the brake booster on my auto and it was real easy to fish the 4ga. over to the battery. I didn't have too remove any of the covers either. The manual looks like it would be a bitch to get to though. I guess it depends on which trans you have?