Sub + Amp Questions - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

itdansharpe · 08-27-2012, 09:26 AM

Hi guys, looking for advice on a couple of things. Love the stock look when it comes to sound systems. I ordered an amp that will fit in the trunk in the top right corner under the carpet if I cut out a section of foam... as seen on other threads.

Couple quick questions!

1. Where's the best location to run the power line from the battery through the firewall?

2. Does anyone know if the upgraded FR-S HU has a trigger (turn-on) wire? If not, could it be run off the amp in the back? (I'd almost prefer to do that anyway since it is closer.)

3. Lastly, I'd love to hear from guys who've already done this... are you running power up the right side of the car and RCA'S up the left?

-----

Just picked up my car last Friday... what a machine!!!

michaelahess · 08-27-2012, 12:57 PM

1. Grommet on passenger side, do a search, my thread has pics too I believe.

2. The amp in back has a remote wire, check the service manual for a full breakdown.

3. Power on passenger side, speakers and rca's on the driver side. I think everyone has done it that way so far. All on the floor too, don't know that anyone has gone through the pillars...

Plxdjake89 · 08-27-2012, 01:30 PM

Quote:

Originally Posted by itdansharpe

Hi guys, looking for advice on a couple of things. Love the stock look when it comes to sound systems. I ordered an amp that will fit in the trunk in the top right corner under the carpet if I cut out a section of foam... as seen on other threads.

Couple quick questions!

1. Where's the best location to run the power line from the battery through the firewall?

2. Does anyone know if the upgraded FR-S HU has a trigger (turn-on) wire? If not, could it be run off the amp in the back? (I'd almost prefer to do that anyway since it is closer.)

3. Lastly, I'd love to hear from guys who've already done this... are you running power up the right side of the car and RCA'S up the left?

-----

Just picked up my car last Friday... what a machine!!!

If you look on the drivers side of the car, you will see a grommet there as well, get some scissors And cut of the nipple looking piece. That's where I fed my power wire

itdansharpe · 08-27-2012, 02:22 PM

Thanks for the quick response guys! Appreciated. As for the remote wire off the amp: Here's a diagram of the amp from the service manual. I'm don't fully understand what is going on, but I don't see a line out for it, unless you are referring to AMP?

Plxdjake89 · 08-27-2012, 02:59 PM

That would be it

Plxdjake89 · 08-27-2012, 03:00 PM

I did mine from behind the head unit itself, just tapped into one of the 12v wires.

cnk · 08-27-2012, 03:15 PM

Quote:

Originally Posted by Plxdjake89

I did mine from behind the head unit itself, just tapped into one of the 12v wires.

You tapped the 12V from behind the HU for your amp? If so, that's a big no-no. You should be taking 12V directly from the battery with a fuse inline. You run the risk of drawing more power than the wires to the HU are able to support and causing a wire to melt or worse, a fire.

itdansharpe · 08-27-2012, 03:16 PM

Quote:

Originally Posted by Plxdjake89

I did mine from behind the head unit itself, just tapped into one of the 12v wires.

I'll see if I can get power off the rear amp otherwise I'll do the same as you and run it off the HU. Although, it makes sense to run it off the rear amp for obvious reasons: less wiring = big weight savings = faster 1/4 mile times. Wires are heavy! ha ha...

itdansharpe · 08-27-2012, 03:16 PM

Quote:

Originally Posted by cnk

You tapped the 12V from behind the HU for your amp? If so, that's a big no-no. You should be taking 12V directly from the battery with a fuse inline. You run the risk of drawing more power than the wires to the HU are able to support and causing a wire to melt or worse, a fire.

We are talking about the trigger wire.

Plxdjake89 · 08-27-2012, 03:19 PM

Quote:

Originally Posted by itdansharpe

We are talking about the trigger wire.

Correct, I can't remember which wire it was off the top of my head, but I can help once I get home. I believe it was a red cable with a white stripe. Anyway, I believe if you tapped into the green wire on that amp in the rear, it would pretty much be the same difference.

cnk · 08-27-2012, 03:22 PM

Quote:

Originally Posted by Plxdjake89

Correct, I can't remember which wire it was off the top of my head, but I can help once I get home. I believe it was a red cable with a white stripe. Anyway, I believe if you tapped into the green wire on that amp in the rear, it would pretty much be the same difference.

Good to hear. Just making sure. Didn't want someone to be posting up that their car burned down.

Plxdjake89 · 08-27-2012, 03:30 PM

Quote:

Originally Posted by cnk

Good to hear. Just making sure. Didn't want someone to be posting up that their car burned down.

Lol, seriously. I knew a kid who had this 20th gti....burned down to the ground.

Foobar · 08-27-2012, 04:00 PM

Which pin on the stock amp carries power? Is it switched with the audio or is it always on with ACC? I'd like to tap into it for a rearview camera if I can, since it's right there anyway.

Plxdjake89 · 08-27-2012, 04:13 PM

Quote:

Originally Posted by Foobar

Which pin on the stock amp carries power? Is it switched with the audio or is it always on with ACC? I'd like to tap into it for a rearview camera if I can, since it's right there anyway.

I believe it's always on with acc, and it should be the green wire

08-27-2012, 09:26 AM	#1
itdansharpe Senior Member Join Date: Aug 2012 Drives: 2013 Scion FR-S Location: Barrie, ON Posts: 284 Thanks: 93 Thanked 271 Times in 54 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	Sub + Amp Questions Hi guys, looking for advice on a couple of things. Love the stock look when it comes to sound systems. I ordered an amp that will fit in the trunk in the top right corner under the carpet if I cut out a section of foam... as seen on other threads. Couple quick questions! 1. Where's the best location to run the power line from the battery through the firewall? 2. Does anyone know if the upgraded FR-S HU has a trigger (turn-on) wire? If not, could it be run off the amp in the back? (I'd almost prefer to do that anyway since it is closer.) 3. Lastly, I'd love to hear from guys who've already done this... are you running power up the right side of the car and RCA'S up the left? ----- Just picked up my car last Friday... what a machine!!! __________________ New: 2014 6MT Asphalt Rota Titan 17x9, RS-3 V2, Skunk2 Pro-C, Eibach Sway Bars, Password:JDM Strut Tower Bar, Perrin MCB, StopTech Stainless Lines, Hawk HP+, Nameless 3" Exhaust, VG Sharkfin, FIVE:AD Spoiler, DDM Tuning HID's 5k, HID Old: 2013 6AT Boosted Firestorm..

08-27-2012, 12:57 PM	#2
michaelahess Senior Member Join Date: Apr 2012 Drives: '13 GBS BRZ Lim, 2006 Dodge RAM MC Location: Wyoming Posts: 663 Thanks: 72 Thanked 148 Times in 98 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	1. Grommet on passenger side, do a search, my thread has pics too I believe. 2. The amp in back has a remote wire, check the service manual for a full breakdown. 3. Power on passenger side, speakers and rca's on the driver side. I think everyone has done it that way so far. All on the floor too, don't know that anyone has gone through the pillars... __________________ Mike's Car Journal

08-27-2012, 02:22 PM	#4
itdansharpe Senior Member Join Date: Aug 2012 Drives: 2013 Scion FR-S Location: Barrie, ON Posts: 284 Thanks: 93 Thanked 271 Times in 54 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	Thanks for the quick response guys! Appreciated. As for the remote wire off the amp: Here's a diagram of the amp from the service manual. I'm don't fully understand what is going on, but I don't see a line out for it, unless you are referring to AMP? __________________ New: 2014 6MT Asphalt Rota Titan 17x9, RS-3 V2, Skunk2 Pro-C, Eibach Sway Bars, Password:JDM Strut Tower Bar, Perrin MCB, StopTech Stainless Lines, Hawk HP+, Nameless 3" Exhaust, VG Sharkfin, FIVE:AD Spoiler, DDM Tuning HID's 5k, HID Old: 2013 6AT Boosted Firestorm..

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
E85 questions	Grishbok	Engine, Exhaust, Transmission	17	08-08-2012 11:49 PM
Drifting the 86 Questions	HATED1	Scion FR-S / Toyota 86 GT86 General Forum	9	07-06-2012 04:31 AM
FR-S NAV Questions	Dan86	Electronics \| Audio \| NAV \| Infotainment	6	07-01-2012 03:24 PM
Questions	Do Boy	Engine, Exhaust, Transmission	4	06-22-2012 03:33 PM
A Few Stereo Questions...	BigJyoungblood	Electronics \| Audio \| NAV \| Infotainment	1	06-14-2012 08:18 PM

08-27-2012, 02:59 PM	#5
Plxdjake89 Senior Member Join Date: Jun 2012 Drives: 2013 Scion FR-S-white out Location: 818 So Cal Posts: 612 Thanks: 354 Thanked 169 Times in 110 Posts Mentioned: 4 Post(s) Tagged: 1 Thread(s)	That would be it

08-27-2012, 03:00 PM	#6
Plxdjake89 Senior Member Join Date: Jun 2012 Drives: 2013 Scion FR-S-white out Location: 818 So Cal Posts: 612 Thanks: 354 Thanked 169 Times in 110 Posts Mentioned: 4 Post(s) Tagged: 1 Thread(s)	I did mine from behind the head unit itself, just tapped into one of the 12v wires.

User Name		Remember Me?
Password