Power wire gauge through firewall?

Nillaz

Hey guys I had to replace my original Z and need to install another audio system. While I was planning out the setup/wire runs I forgot to take into account the gauge of the power wire through the firewall for my amp.

I spec'd it with a 4ga kit but can anyone tell me definitively if this will fit through the grommet in the firewall behind the battery? It's been two years since I last had to do this and can't for the life of me remember what I ran last time. I just perused the install videos as a refresher and I'm sure it's listed in there somewhere but I must have missed it. I suspect I should be OK but confirmation would give me some peace of mind. If it's not going to fit I'll order another amp kit immediately.

Thanks!

RonRizz

4 Ga. no problem...

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P99rs Head Unit--- Amps- 2 Pioneer Prs800d --- Zapco ST1000MX---Zapco ST-4XSQ---- SI BM mk5 Subs---SI TM65v2 Midbass--- SI M3 mids--- SI M25 xbl2 tweeters ----- 2016 MECA street class 3rd place at world finals

Nillaz

Thanks Ron much obliged!

Nillaz

OK I started doing my install today and I'm totally perplexed. Did Nissan nix the grommet on the passenger side for '12 models? I know I ran the wire using this method in my '09, but I have removed the plastic shroud and the battery in my '12 and I can't for the life of me find the damned thing.

I managed to run this wire into the cabin in less than 10 minutes in my first Z. Today I've been trying to figure it out for an hour with zero progress.

bigaudiofanat

This should help

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Nillaz

Thanks Big I know I can go through there, but I could have sworn that there was another unused grommet directly behind the battery. Maybe I was just smoking crack at the time?

bigaudiofanat

This is the only one I know of that close to the battery and is very easy to use, Maybe on the other side in the drivers area but could be more work than having something this easy.

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Need help with car audio or electronics? Let me know!! Need Help Let Me Know
Direct email address reimermatt@gmail.com
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Nillaz

I stopped screwing around and just used the big grommet in the pic. Wasn't able to get the whole install done this afternoon but I did make a decent dent with the head unit and amp. Thanks for the assistance!

Minhtin

Will a 0 gauge fit through the grommet? Completely forgot to check before ordering the wire kit.

DEpointfive0

Yes. It's a bitch to make it fit, but it will. I didn't even cut mine a bit, just forced it

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RonRizz

A little lube works wonders

__________________
P99rs Head Unit--- Amps- 2 Pioneer Prs800d --- Zapco ST1000MX---Zapco ST-4XSQ---- SI BM mk5 Subs---SI TM65v2 Midbass--- SI M3 mids--- SI M25 xbl2 tweeters ----- 2016 MECA street class 3rd place at world finals

Minhtin

Not sure how I feel about lube in this application lol.

SouthArk370Z

Rubbing a candle (or other waxy product) on the wire is usually very effective and much neater than using a wet lube.

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Minhtin

Humm think I got some sex wax laying around. I'll give that a try. Thanks.

RonRizz

spray bottle with water and dish soap is what I go to.

__________________
P99rs Head Unit--- Amps- 2 Pioneer Prs800d --- Zapco ST1000MX---Zapco ST-4XSQ---- SI BM mk5 Subs---SI TM65v2 Midbass--- SI M3 mids--- SI M25 xbl2 tweeters ----- 2016 MECA street class 3rd place at world finals