My 90 Ef Hatch has full interior through out the whole thing... any way my question is


Where can i ground my subs at in the trunk? i took off a panel in the trunk (Where the brake light wires are) and i sanded down around a bolt got off all the paint and it still didnt work right.. and only 1 of the 2 subs came on... and it wasnt the best sound... So if any one has a EF hatch with subs plz tell me where u grounded urs... and a Pic if u can to plz Thanks

 

Seat belt bolt, or shock tower stud. Make sure the ground line is <12in though.

 

You don't "ground" subs.Do you mean you want to ground the subwoofer amplifier?

 

I sure hope that's what he meant...

 

haha + and - from the amp both go to the sub. + from the battery goes to + input on amp, - goes from negative output on amp to closest metal on chassis. Any metal will work on the body, just get it down to bare metal and keep the wire as short as possible

 

I also assume, [and hope] you mean ground the amp.

As mentioned, keep it as short as possible and use any bolt/stud that goes into the cars floor pan, rear seat and seat belt bolts/studs work the best.

Use proper size ring terminal, stud size, [hole in terminal] should be the same as stud or bolt used, one that is bigger will cut down on contact area.

Make sure ring terminal is in contact with the floor pan, placing the seat belt mounting bracket between the floor pan and the ring terminal will work, but not a good as if the ring terminal is between the bracket and the floor pan.


I do not agree that "any metal will work", let me rephrase, work properly, the best place is the cars floor pan, it is a single piece of sheet metal from just behind the rear seat to most of the way up the fire wall if not all the way. 94

 

I did put some white lithinium. That will prevent rust..

 

Yeah i ment amps... figured same thing didnt think every one would yell at me lol

 

No one is yelling, IF WE WERE YOU WOULD KNOW, if you were not so new to the site you would know that someone asking where to ground a sub could easily be a no0b asking "where to ground the sub" and meaning the sub itself.

Getting a correct answer in a timely manner, [instead of playing post tag] is in asking the question properly.

The above is in no way meant as a dis, only as a suggestion to getting the correct info you need without any misunderstandings. 94

 

I thought we were going back to the old school days of floating grounds radios. I know you remember those,lol

 

i have always used the bolt that holds the bottom section of the rear seat in place. and like everyone else said. as short as possible, same guage wire as your power and scrape or wire brush paint off to bare metal.

 

No one is yelling at you but you have to ask the question properly. People see (+) (-) terminals and assume the mean the same thing as (+)(-) on a battery. To even more confuse you early amplifier designs allowed a subwoofer to be grounded to the chassis. Confused so many people that they stuck stickers on the amplifier "do not ground speaker terminals to chassis ground."

On an amplifier
+ is not positive
- is not negative

Instead they represent the phase of the signal.

 

I have a 90 hatch and grounded my amp underneath the cover where the tail lights are. There was a hole on mine where a bolt and screw fit and worked great. Make sure all the contacts are good and cleaned and you should be alright.