Car Audio Car audio related questions and helpful hints for building the best sound system for your car or getting the most out of what you have.

Amp Grounding.

Thread Tools
 
Search this Thread
 
Old 02-28-2009, 10:22 AM
  #1  
Member

Thread Starter
 
Mailbox Hunter's Avatar
 
Join Date: Feb 2008
Location: East
Posts: 144
Likes: 0
Received 0 Likes on 0 Posts
Car: 89 Camaro RS
Engine: 350 TBI
Transmission: 700R4
Axle/Gears: 10 bolt/ 3.23 Gear.
Amp Grounding.

Sorry, quick question, wheres the most efficient place to ground an amp in the hatch area?
Old 02-28-2009, 10:25 AM
  #2  
Member

iTrader: (6)
 
chads89ta's Avatar
 
Join Date: Feb 2004
Location: lima ohio
Posts: 272
Likes: 0
Received 0 Likes on 0 Posts
Car: red 89 t-top ta
Engine: 305 tpi
Transmission: t-5
Axle/Gears: 9 bolt soon
Re: Amp Grounding.

under the rear panels in the hatch area there is a pinch weld, sand the area down to metal drill hole then bolt ground wire to it
Old 02-28-2009, 11:41 AM
  #3  
Senior Member
 
mtwlkn122's Avatar
 
Join Date: Nov 2008
Location: Batavia Area, NY
Posts: 467
Likes: 0
Received 0 Likes on 0 Posts
Car: 91 Firebird, 06 Dodge Ram 1500 SLT
Engine: 3.1L, 4.7L
Transmission: 700r4, 45RFE
Axle/Gears: 3.23 open, 3.55?
Re: Amp Grounding.

...thats what i did...then run your cables so you cant see anything. I have two amps tho. I think i drilled a 3/8 hole and used a 3/8 bolt nut and lock washer(thats the ring terminal size for most 4 gauge wire)
Old 02-28-2009, 02:42 PM
  #4  
Member

Thread Starter
 
Mailbox Hunter's Avatar
 
Join Date: Feb 2008
Location: East
Posts: 144
Likes: 0
Received 0 Likes on 0 Posts
Car: 89 Camaro RS
Engine: 350 TBI
Transmission: 700R4
Axle/Gears: 10 bolt/ 3.23 Gear.
Re: Amp Grounding.

any other way than doing that?
Old 02-28-2009, 05:17 PM
  #5  
Senior Member
 
crytical point's Avatar
 
Join Date: Feb 2008
Location: Sanford, FL
Posts: 441
Likes: 0
Received 0 Likes on 0 Posts
Car: 92 RS Camaro
Engine: 305 TBI
Transmission: T5
Axle/Gears: 3.08
Re: Amp Grounding.

Not really you will have to drill a hole and strip to metal for a good ground. If not then you amps will perform badly or cause some other problems down the road.
Old 03-01-2009, 02:11 AM
  #6  
Member
 
IROCKET4U's Avatar
 
Join Date: Jan 2009
Location: Renton, WA
Posts: 166
Likes: 0
Received 1 Like on 1 Post
Car: 1988 IROC
Engine: 5.7 litre
Transmission: Auto--700R4
Axle/Gears: 3.27 Posi with 4 wheel disc brakes
Re: Amp Grounding.

There is another option: Since your running the power wire back from the battery why not run a ground back from the battery too?
Old 03-01-2009, 08:50 AM
  #7  
Senior Member
 
mtwlkn122's Avatar
 
Join Date: Nov 2008
Location: Batavia Area, NY
Posts: 467
Likes: 0
Received 0 Likes on 0 Posts
Car: 91 Firebird, 06 Dodge Ram 1500 SLT
Engine: 3.1L, 4.7L
Transmission: 700r4, 45RFE
Axle/Gears: 3.23 open, 3.55?
Re: Amp Grounding.

Originally Posted by IROCKET4U
There is another option: Since your running the power wire back from the battery why not run a ground back from the battery too?
haha i guess some ppl can call that an option. At the price for 4 gauge or better a foot i wouldn't even consider doing that. Its so much easier and causes you a lot less problems if you just drill a hole and bolt that baby down. TO TOP ALL THAT you want the shortest ground as possible. The shorter your ground is the better off your going to be. If your stressing out about drilling a hole...dont. Its only a hole. Thats part of customizing/repairing a car. I mean dont go around making your car a big swiss block.
Old 03-01-2009, 11:55 AM
  #8  
Supreme Member

 
Al Hasse's Avatar
 
Join Date: Jun 2005
Location: Bremerton, WA
Posts: 1,800
Likes: 0
Received 2 Likes on 2 Posts
Car: 1992 RS / 1989 RS
Engine: 3.1L MFI / Vortec 383 TBI
Transmission: T5 / LS-T56
Axle/Gears: 3.42 open / 3.73 Eaton posi
Re: Amp Grounding.

Originally Posted by chads89ta
under the rear panels in the hatch area there is a pinch weld, sand the area down to metal drill hole then bolt ground wire to it
Originally Posted by mtwlkn122
...thats what i did...then run your cables so you cant see anything. I have two amps tho. I think i drilled a 3/8 hole and used a 3/8 bolt nut and lock washer(thats the ring terminal size for most 4 gauge wire)
This keeps the ground wire short and decreases the chance of ground loops. Mine is grounded to the floor of the well where it starts to turn up toward the hatch. Instead of a lock washer, use a star washer which will bite into the metal as the bolt is tightened.
Old 03-01-2009, 01:25 PM
  #9  
Member

 
-srs-'s Avatar
 
Join Date: Dec 2008
Location: Tyler, Tx
Posts: 401
Likes: 0
Received 0 Likes on 0 Posts
Car: 1991 Z28 Vert
Engine: 305 TPI
Re: Amp Grounding.

Good contact is so important. Star washers do a great job. Ground loops are caused by unequal potential between grounding points. That ground point starts at the amp. Wire guage, quality, length all affect the potential of the ground. What sucks is that if you get all of those things right and choose a bad place to attach that ground you can cause yourself problems. Even worse is that you can do EVERYTHING right but if you have a bad/weak ground at the battery you can have a loop.
Old 03-05-2009, 10:19 AM
  #10  
Supreme Member

iTrader: (2)
 
87350IROC's Avatar
 
Join Date: May 2002
Location: Everett, WA
Posts: 4,449
Likes: 0
Received 7 Likes on 7 Posts
Car: 87' IROC
Engine: L98
Transmission: T56
Re: Amp Grounding.

Any issues with using one of the grounds already in that area? I'm putting an amp in the spare tire well and there is a ground there for the rear defroster. The amp is only a 200 watt rms 4 channel with 8 gauge wire.
Old 03-14-2009, 01:19 PM
  #11  
Senior Member
 
firebird904's Avatar
 
Join Date: Feb 2009
Location: Jacksonville FL
Posts: 601
Likes: 0
Received 0 Likes on 0 Posts
Car: 1988 camaro
Engine: cammed 3.1
Transmission: 700r4
Axle/Gears: 10 bolt 3.42
Re: Amp Grounding.

I grounded my amp with the bolt inside the panel where the rear seat belt is and ive had it like that for about 6 months and it works great i sanded it down to the bare metal first then just bolted it down with the seatbelt's bolt
Old 03-14-2009, 01:28 PM
  #12  
Supreme Member
 
rough's Avatar
 
Join Date: Apr 2007
Location: St. Petersburg, FL
Posts: 1,087
Likes: 0
Received 1 Like on 1 Post
Car: 88 Camaro
Engine: 305 TBI
Transmission: 700-R4
Axle/Gears: 2.73
Re: Amp Grounding.

You can put your amp in the spare tire area, drill a few holes, run your wires, looks clean plus no one can see where your amp is.
Old 03-16-2009, 01:45 AM
  #13  
Junior Member
 
acadburn's Avatar
 
Join Date: Oct 2006
Location: Grand Forks ND
Posts: 98
Likes: 0
Received 0 Likes on 0 Posts
Car: 1989 Camaro RS
Engine: 305 V8
Transmission: Auto
Re: Amp Grounding.

I know quite a few people who use the seat belt bracket and ground right to

that is usually a very good option ... remember to remove the paint wherever you ground to it will help a lot

grounding to the battery is always a very good option and wire really isnt all that expensive. remember your ground wire going back to the battory needs to be at least as big as the power wire

also you can never have to many grounds if you think your ground isnt good enough simply make a 2nd
Old 03-17-2009, 12:27 AM
  #14  
Junior Member
 
Prettymuch2cool's Avatar
 
Join Date: Mar 2009
Posts: 4
Likes: 0
Received 0 Likes on 0 Posts
Re: Amp Grounding.

Im going to have to agree that the best place is hooked up to the seatbelt bolt. I install custom electronics and thats where I have always put the ground on camaros and firebirds.
Old 03-30-2009, 05:15 PM
  #15  
Member

Thread Starter
 
Mailbox Hunter's Avatar
 
Join Date: Feb 2008
Location: East
Posts: 144
Likes: 0
Received 0 Likes on 0 Posts
Car: 89 Camaro RS
Engine: 350 TBI
Transmission: 700R4
Axle/Gears: 10 bolt/ 3.23 Gear.
Re: Amp Grounding.

anyone think it would be a good idea to mount the amp under the driver seat, ground the the driver seatbelt (or even the seat bracket for that matter), and just run the speaker wire back? I think that would be less hassle then running all the wires back the the trunk. Thoughts?
Old 03-30-2009, 06:00 PM
  #16  
Senior Member
 
V6F1R3BRD's Avatar
 
Join Date: Feb 2009
Location: N. Virginia
Posts: 660
Likes: 0
Received 0 Likes on 0 Posts
Car: 1988 Firebird - 1998 Z28
Engine: 2.8 - LS1
Re: Amp Grounding.

Originally Posted by Mailbox Hunter
anyone think it would be a good idea to mount the amp under the driver seat, ground the the driver seatbelt (or even the seat bracket for that matter), and just run the speaker wire back? I think that would be less hassle then running all the wires back the the trunk. Thoughts?
Now why didn't my slow @*# think of that. my amp has one of those sound filters that i change depending on the music i have playin... could reach under the frikin seat and switch instead of stopping the car, getting out, poppin the hatch, folding the seat down.... well u get the point .
Old 03-30-2009, 06:34 PM
  #17  
Member

Thread Starter
 
Mailbox Hunter's Avatar
 
Join Date: Feb 2008
Location: East
Posts: 144
Likes: 0
Received 0 Likes on 0 Posts
Car: 89 Camaro RS
Engine: 350 TBI
Transmission: 700R4
Axle/Gears: 10 bolt/ 3.23 Gear.
Re: Amp Grounding.

Originally Posted by V6F1R3BRD
Now why didn't my slow @*# think of that. my amp has one of those sound filters that i change depending on the music i have playin... could reach under the frikin seat and switch instead of stopping the car, getting out, poppin the hatch, folding the seat down.... well u get the point .
so i take it, it should be good to do =]
i started running the wires, and well 34d outside
anyone else have any thoughts?
Old 03-30-2009, 06:41 PM
  #18  
Member
 
ClickClickVroom's Avatar
 
Join Date: Jan 2009
Location: St. Aug
Posts: 134
Likes: 0
Received 0 Likes on 0 Posts
Car: 92 Z03 RS TBI
Engine: 5.0 L03
Transmission: T-5
Re: Amp Grounding.

Check in the glove box/compartment area in the rear. I think there was a predrilled hole I used for one of my grounds there.
Old 03-30-2009, 10:18 PM
  #19  
Member

Thread Starter
 
Mailbox Hunter's Avatar
 
Join Date: Feb 2008
Location: East
Posts: 144
Likes: 0
Received 0 Likes on 0 Posts
Car: 89 Camaro RS
Engine: 350 TBI
Transmission: 700R4
Axle/Gears: 10 bolt/ 3.23 Gear.
Re: Amp Grounding.

Originally Posted by ClickClickVroom
Check in the glove box/compartment area in the rear. I think there was a predrilled hole I used for one of my grounds there.
im trying my best to divert running unnecessary wires =]. the less the better.

ps, i LOVE how the sky reflects off your hood in the pic, very artistic, and sharp
Old 03-30-2009, 11:05 PM
  #20  
Member
 
ClickClickVroom's Avatar
 
Join Date: Jan 2009
Location: St. Aug
Posts: 134
Likes: 0
Received 0 Likes on 0 Posts
Car: 92 Z03 RS TBI
Engine: 5.0 L03
Transmission: T-5
Re: Amp Grounding.

Originally Posted by Mailbox Hunter
im trying my best to divert running unnecessary wires =]. the less the better.

ps, i LOVE how the sky reflects off your hood in the pic, very artistic, and sharp
yeah I hear ya. I have yet to clean up my wiring. I imagine I'll just tuck it under the box or something :P

and thanks. That was with a 55mm Macro lens I got not too long ago. It makes a decent portrait lens, and I can't decide if i like that shot or not. Too cluttered in the background. But I had just washed the baby, and I didn't feel like driving to an empty parking lot.
Old 03-31-2009, 09:36 AM
  #21  
Supreme Member
iTrader: (4)
 
1ADan's Avatar
 
Join Date: Mar 2009
Location: Pepperell, MA
Posts: 3,079
Likes: 0
Received 3 Likes on 3 Posts
Car: 1987 Trans Am
Engine: LQ9/L92
Transmission: 4L60E
Re: Amp Grounding.

I had used the seat belt bolt like most have mentioned when I installed my amps in place of the back seat. When I was running an older setup in the hatch, I used one of the bolts holding the manual hatch latch. Not the most ideal spot, but never had any issues.
Old 03-31-2009, 02:52 PM
  #22  
Supreme Member

iTrader: (9)
 
krisb410's Avatar
 
Join Date: Nov 2005
Location: Naples, FL
Posts: 2,346
Received 1 Like on 1 Post
Car: 91 RS Camaro, 75 L82 Corvette
Engine: LO3, 383 Stroker
Transmission: 700R4, TH400
Axle/Gears: 4th gen 3.23 posi/LS1 discs, stock
Re: Amp Grounding.

Originally Posted by Mailbox Hunter
anyone think it would be a good idea to mount the amp under the driver seat, ground the the driver seatbelt (or even the seat bracket for that matter), and just run the speaker wire back? I think that would be less hassle then running all the wires back the the trunk. Thoughts?
I have a 4 channel amp mounted under the seat, grounded to one the studs for the seat. My sub amp is mounted in the rear glove box and is grounded on one of the tail light bolts.
Old 04-01-2009, 11:59 PM
  #23  
Member

Thread Starter
 
Mailbox Hunter's Avatar
 
Join Date: Feb 2008
Location: East
Posts: 144
Likes: 0
Received 0 Likes on 0 Posts
Car: 89 Camaro RS
Engine: 350 TBI
Transmission: 700R4
Axle/Gears: 10 bolt/ 3.23 Gear.
Re: Amp Grounding.

i tried running to the bolt, but the damn amp didnt fit under the seat like ide like it to. so i put it in the trunk ofthe high flat area and i mounted it to the the rear seat belt bolt.
works like a charm!



thank you for all the support!
Old 04-02-2009, 09:20 PM
  #24  
Supreme Member

 
8t2 z-chev's Avatar
 
Join Date: Jan 2009
Location: belle fourche,s.d.
Posts: 2,151
Received 60 Likes on 54 Posts
Car: '82 z28
Engine: L83 5.7
Transmission: 700r4-1985
Axle/Gears: 3.42 posi
Re: Amp Grounding.

I mounted a fairly big "old skool"amp along with a few
terminal strips and other parts under the driver's seat
-cut out the carpet underneath and made a mounting
plate,was quite a bit of room,2 more amps are in the
LH lockbox area.
Old 04-02-2009, 10:16 PM
  #25  
Tpx
Senior Member
 
Tpx's Avatar
 
Join Date: Jun 2008
Location: Cypress, CA
Posts: 305
Likes: 0
Received 1 Like on 1 Post
Car: 1982+1988 Z28 Camaros
Engine: 1982=350 carb 1988=383 Carb
Transmission: 1982=4 speed T-10 1988=6 speed T56
Axle/Gears: 1982=stock
Re: Amp Grounding.

I grounded my two amps in the hatch area on the metal supports parallel to either the left or right quarter panels. There are metal bars running vertical and you can drill a hole in there.

If you look closely you can see a fugly dent on my passenger side quarter panel, right behind the dent are the supports i'm talking about. It's also the reason it's not an option for me to bang that dent out
Old 04-03-2009, 12:29 AM
  #26  
Junior Member
 
3rdgnberlinetta's Avatar
 
Join Date: Mar 2009
Location: ONTARIO/L A
Posts: 20
Likes: 0
Received 0 Likes on 0 Posts
Car: TRUE BERLINETTA
Engine: 5.0 CARB. ALL DAY
Transmission: 700 R4 TURBO
Axle/Gears: 373 BURN N DWN THE TRACK
Re: Amp Grounding.

u dont have to drill anything. just a washer and strip more wire out take that thru he hole of the washer and take one of the blck plastic light screws off your rear lights and attach the washer on the bolt and screw it back on.it will work perfect,i worked at a sound shop and thats how i ground every camaro,im running 4000 watts of just bass power ans have no issues at all,just make sure you use the right gauge of wire
Old 04-09-2009, 06:08 PM
  #27  
Supreme Member

 
NEEDAZ's Avatar
 
Join Date: Oct 1999
Location: Westminster, MD
Posts: 1,734
Likes: 0
Received 0 Likes on 0 Posts
Car: 89 IROC-Z
Engine: 355 TPI
Transmission: 700R4
Re: Amp Grounding.

I can't believe what some people think is a good ground these days...
Old 04-09-2009, 08:02 PM
  #28  
Senior Member
 
V6F1R3BRD's Avatar
 
Join Date: Feb 2009
Location: N. Virginia
Posts: 660
Likes: 0
Received 0 Likes on 0 Posts
Car: 1988 Firebird - 1998 Z28
Engine: 2.8 - LS1
Re: Amp Grounding.

Originally Posted by NEEDAZ
I can't believe what some people think is a good ground these days...
i know right.. i don't like the idea of finding a random bolt and just tightening it down.. some are good, but your tailight? wtf man. find a good hidden area, sand to bare metal, drill it and use a star/locking washer. don't be lazy and just do it right. its better in the long run. And 3rdgnberlinetta, if you worked at a sound shop and did it that half-a**ed, i hope you got fired real quick.
Old 04-18-2009, 12:28 PM
  #29  
Senior Member

iTrader: (15)
 
88TransAmFreak's Avatar
 
Join Date: Jun 2005
Location: NE Arkansas
Posts: 880
Likes: 0
Received 0 Likes on 0 Posts
Car: 1971 Camaro
Re: Amp Grounding.

Hey guys,

I noticed the other day when I was installing stereo that the battery is grounded to a point on the engine block. It seems like that would cause a ground loop if your trying to ground to sheetmetal in the rear of the car.


What I've done with cars that actually have a full frame is ground my battery to the front part of the frame and ground my amps straight to the frame in the rear, hence no ground loop.

I'm thinking about running a ground off my battery and going straight back to the spot (metal brace in the rear) to strengthen that ground.
Old 04-20-2009, 04:48 PM
  #30  
Supreme Member

 
NEEDAZ's Avatar
 
Join Date: Oct 1999
Location: Westminster, MD
Posts: 1,734
Likes: 0
Received 0 Likes on 0 Posts
Car: 89 IROC-Z
Engine: 355 TPI
Transmission: 700R4
Re: Amp Grounding.

Ground to big, thick metal. As long as you do that at the amp and deck, and you got the big 3, you shouldn't have to worry about ground loops. If you are worried, you can run a ground from the deck back to where you have the amp grounded, but shouldn't need to.
Old 10-29-2011, 08:46 AM
  #31  
Supreme Member

 
redcamaro83's Avatar
 
Join Date: Sep 2000
Location: Chicago, IL
Posts: 1,370
Likes: 0
Received 0 Likes on 0 Posts
Car: 86 Z28
Engine: 305
Transmission: 700r4
Axle/Gears: TBD
Re: Amp Grounding.

woooooooooo back from the dead...... in time for halloween.

A little info:

our body ground is that piece of measly black 10-12ga wire that bolts up near the fender. installing an amp? replace that while ur at it. running more than 2-300 watts? run at LEAST an 8ga cable from alternator power terminal to your battery (yea that other small red wire going to the battery is your charge wire) terminal.

Now for amp wiring. rule of thumb: ground wise, keep it short and as large as possible. plenty of holes around under hatch panels seats etc sand the area prior to bare metal bolt it up an BAM!! you'll be bumpin away in no time.

My name is sparky and i approve this message......lol
Old 10-30-2011, 06:04 PM
  #32  
Supreme Member
iTrader: (4)
 
1ADan's Avatar
 
Join Date: Mar 2009
Location: Pepperell, MA
Posts: 3,079
Likes: 0
Received 3 Likes on 3 Posts
Car: 1987 Trans Am
Engine: LQ9/L92
Transmission: 4L60E
Re: Amp Grounding.

Originally Posted by redcamaro83
woooooooooo back from the dead...... in time for halloween.

A little info:

our body ground is that piece of measly black 10-12ga wire that bolts up near the fender. installing an amp? replace that while ur at it. running more than 2-300 watts? run at LEAST an 8ga cable from alternator power terminal to your battery (yea that other small red wire going to the battery is your charge wire) terminal.

Now for amp wiring. rule of thumb: ground wise, keep it short and as large as possible. plenty of holes around under hatch panels seats etc sand the area prior to bare metal bolt it up an BAM!! you'll be bumpin away in no time.

My name is sparky and i approve this message......lol

i agree. the "big three" should always be one of the first electrical upgrades done on any car, especially when a stereo upgrade is involved. bat to ground, block to ground, and bat to alternator. the stock wiring was sufficient for a stock car; adding any additional circuits (especially when talking a high draw amp setup) will start to show the weaknesses of the factory setup real quick
Old 01-01-2012, 07:10 PM
  #33  
Supreme Member
iTrader: (6)
 
evilemokid94's Avatar
 
Join Date: Aug 2009
Location: Elwood, IN
Posts: 3,670
Likes: 0
Received 3 Likes on 3 Posts
Car: 1986 camaro Sports Coupe
Engine: L31 350
Transmission: 89 700R4
Axle/Gears: 3.42 gov lock
Re: Amp Grounding.

i used my spare tire mounting point. works good for me
Old 01-03-2012, 04:53 AM
  #34  
Member

 
alicat's Avatar
 
Join Date: Apr 2005
Location: tasmania australia
Posts: 328
Received 0 Likes on 0 Posts
Car: 1985 z28 camaro
Engine: 305 lg4,edelbrock,3"air cleaner.k&n
Transmission: turbo 700r4 w/b&m megashifter
Axle/Gears: Stock.
Re: Amp Grounding.

I ground my amps to the rear seat mounting bolts,the bottom ones,and run the cables
up behind the seat back.Everything is nicely hidden.

Alicat.
Old 11-11-2012, 09:33 AM
  #35  
Junior Member
 
89firechicken89's Avatar
 
Join Date: Nov 2011
Location: FDL WI.
Posts: 33
Likes: 0
Received 0 Likes on 0 Posts
Car: 91 camaro rs
Engine: 5.0
Transmission: T-5
Re: Amp Grounding.

i grounded mine to the seat bracket
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Cam-aro
Camaros Wanted
2
11-12-2015 03:35 PM
SRKLEGIN
Interior
7
10-29-2015 06:38 PM
oil pan 4
Fabrication
2
10-06-2015 11:56 AM
SRKLEGIN
Interior
6
10-03-2015 10:11 PM
raymondandretti
Electronics
1
09-27-2015 06:43 PM



Quick Reply: Amp Grounding.



All times are GMT -5. The time now is 01:52 AM.