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Installing amp what is the best way to drill through the firewall for installing an amp? where would be best?

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As high as possible on the fire wall to avoid lots of water contact on hole and eventual rust

Posted on Jul 28, 2008


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I have a 92 mx-3 & the hold light keeps flashing & the speedometer has stopped working. what would be the cause of these issues?

You may have drilled thru firewall and cut a wire. Look very closely. Thank you and please leave feedback

Apr 14, 2016 | 1992 Mazda MX-3


Wiring Your Own Amp

FIRST RULE NEVER HOOK UP THE POWER WIRE WHILE INSTALLING!When installing and you buy an amp wiring kit, its a lot easier to have to fuse in the truck by the amplifier and not closer to the battery! Also it is better protected from corrosion! Its best to either drill a hole in the firewall or to poke a hole in the main wiring harness going into the passenger compartment. For added protection of the wire and makes the job look like a professional did it!When finding a good ground the best (is to have a equal to or thicker wire than the power for heat dissipation of the amplifier and to protect the amplifier) is to run another wire back to the negative post on the battery.On the way back don't forget to have the remote wire connected to your after market c/d player. Most people use the provided ground wire in the amp kit which is approx. 3 ft long, if you are mounting the amp on the box it may be difficult to reach the chassis (the next best ground) so they use the body (which is an ok ground only when the connection is metal on metal not the metal on the interior body paint!) If you need any help at all send me an email-koltonserwe@yahoo.comBeen doing installation for 6 years and have worked on a lot of interesting projectsThis site located below will show you the proper way to wire the subs you may have purchased (2ohm or 4ohm, Dual Voice Coil "DVC" and Single Voice Coil "SVC") with the amp you have, such as Mono block; 2 and 4 channel amps.

on Jun 07, 2010 | Chevrolet Cavalier Cars & Trucks

1 Answer

Where is the best spot to put wire thru firewall on 2009 Pontiac torrent gxp?

The best place would be to put it thru where another wire is already going thru. Dont drill holes in firewall unless you are sure there is no wires or componants on the other side.

Aug 26, 2014 | Cars & Trucks

1 Answer

I cant find the firewall on my 1999 ford taurus. im installing a system and i need to get the power to the amp

your firewall is the metal panel between the engine bay and the interior of the car. that is the fire wall.

Sep 24, 2011 | 1999 Ford Taurus

1 Answer

What is the best way to run wires from my battery to inside the cabin to wire in a power converter?

The best or more professional way to run the cables is to drill a hole thru the firewall. You need to use wire ties on the cables and route the cables along the factory wiring harness. Try to route to the shortest distance and use a rubber grommet where you have the hole drilled in the firewall. The grommet will keep the cable from getting damaged by the sharp edges of the hole that you drilled. Also the largest possible diameter cable is better because you will get more amperage to the power inverter. Hope this helps :)

Dec 20, 2010 | Ford Taurus Cars & Trucks

1 Answer

Need to replace front door window motors

Electric Window Motor REMOVAL & INSTALLATION Ranger
  1. Disconnect the negative battery cable.
  2. Open the window. Remove the trim panel and watershield and support the window.
  3. Disconnect the power window motor connector.
  4. There may be a drill dimple in the door panel, opposite the concealed motor retaining bolt. Drill out the dimple to gain access to the bolt. Be careful to avoid damage to the wires. Remove the motor mounting bolts and remove the motor and regulator assembly.
  5. Separate the motor and drive from the regulator on a workbench.
  6. Installation is the reverse of removal.
  7. Check for smooth operation before installing the trim panel.
Except Ranger
  1. Raise the window fully if possible. If not, you will have to support the window during this procedure. Disconnect the battery ground.
  2. Remove the door trim panel.
  3. Disconnect the window motor wiring harness.
  4. There may be a drill dimple in the door panel, opposite the concealed motor retaining bolt. Drill out the dimple to gain access to the bolt. Be careful to avoid damage to the wires.
  5. Remove the motor mounting bolts (front door) or rivets(rear door).
  6. Push the motor towards the outside of the door to disengage it from the gears. You'll have to support the window glass once the motor is disengaged.
  7. Remove the motor from the door.
  8. Installation is the reverse of removal. To avoid rusting in the drilled areas, prime and paint the exposed metal, or, cover the holes with waterproof body tape. Make sure that the motor works properly before installing the trim panel.
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Nov 12, 2010 | 1992 Ford Explorer

1 Answer

Were can i drill throught the firewall to run a power wire to my trunk for a amp

i would drill on the driverside, make sure to use rubber insulator around the hole, drill near open area where theres nothing inside, like to the left of steering column.

Aug 27, 2010 | 1990 Geo Prizm

2 Answers

Amp. and Sub install on a 2006 Jeep Gand Cherokee

Your best bet is to actually drill a hole through the firewall and istall a rubber grommet to protect the wire. If this isn't really an option, you might try locating the places the wiring harness and spedometer cable go through the firewall, or where the shifter goes through the transmission tunnel. The main thing is to protect the wire from heat and rubbing against metal. Hope this helps :)

May 10, 2009 | 2006 Jeep Grand Cherokee

1 Answer

96 Cougar routing amp power cable through firewall.

if you look at the firewall area you usually can see rubber or plastic black plugs to run wiring to the passenger compartment; look by the left side kick panel on the floor next to your brake pedal; good area to drill if you have to ; make sure you insulate any cable or power supply going through the firewall so the wire is protected from rubbing or vibration

Apr 14, 2009 | 1996 Mercury Cougar XR7

2 Answers

Any holes in firewall without drilling to run power wire for amp

Best way is through the rubber caps look for em there are up there.

Apr 11, 2009 | 2007 Hyundai Tiburon

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