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Friday, April 26, 2013

1998-2005 Lexus IS300 Main Amp Power Run Through Firewall To Rear


Toyota and Lexus vehicles are typically pretty easy to work on. Running cables/wires through the firewall to the rear is a pretty quick process. This is how I get my wires to the trunk.

Lexus IS300 Running Power Wire For Amp Through Firewall Into Car

Lexus IS300 Running Power Wire For Amp Through Firewall Into Car
Once you locate the rubber grommet securing the factory wires through the firewall, look for an empty/hollow rubber sleeve/nipple. You can normally find one or two. You will want to cut the tip off, I normally use a pair of flush cuts.  

Lexus IS300 Running Power Wire For Amp Through Firewall Into Car
After the tip is removed, you should be able to gain access to the interior of the vehicle through that hole.

Lexus IS300 Running Power Wire For Amp Through Firewall Into Car
Now that you have the main power wire inside the vehicle, you should be able to easily run the power wire along with any additional wires under the plastic side panels to the back seat of the vehicle. Remember if you're installing an amp to power your Mid's and Hi's then you will want to run the RCA's down the opposite side of the power wire to avoid any unwanted noise. 

Lexus IS300 Running Power Wire For Amp Through Firewall Into Car
Once the wires are at the back seat,

Lexus IS300 Running Power Wire For Amp Through Firewall Into Car

Lexus IS300 Running Power Wire For Amp Through Firewall Into Car

Lexus IS300 Running Power Wire For Amp Through Firewall Into Car
Pull back on the seat, you should be able to see a big access hole to the trunk.

Lexus IS300 Running Power Wire For Amp Through Firewall Into Car

Lexus IS300 Running Power Wire For Amp Through Firewall Into Car
You should be able to easily fish the wires through to the other side, behind the liner in the trunk.

Lexus IS300 Running Power Wire For Amp Through Firewall Into Car
If I am installing a small amp, I typically mount it on the driver side rear panel in the trunk. This vehicle already had an aftermarket stereo, so I just installed an amp/sub. Hope this helps!
Car Audio Tips
- Jeremy 

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