bypassing it in order to install a new aftermarket radio is simple. you have to run your radio's speaker wire to the amp (located under the driver's seat). then hook them up to the wires at the amp, to the corresponding wires:
Left Front Speaker Wire (+): Tan
Left Front Speaker Wire (-): Gray
Right Front Speaker Wire (+): Light Green
Right Front Speaker Wire (-): Dark Green
Left Rear Speaker Wire (+): Brown
Left Rear Speaker Wire (-): Yellow
Right Rear Speaker Wire (+): Dark Blue
Right Rear Speaker Wire (-): Light Blue
I'm not sure how to bypass the amplifier, but it is located behind the glove box. There are two harnesses that connect it to the radio. The bottom harness is removed by squeezing the ears and pulling off. The upper harness' release is on the rear facing side and is more difficult to operate. I used a small box-end wrench to take off the mounting bracket, then you can pull the amplifier out and turn it to see the clip.
Thanks
With premium sound system you have to bypass the factory amplifier and pretty much splice into the factory wires after the amplifier. A good place for questions is the www.clublexus.com forums or the www.lexusownersclub.com forums. Search the forums and your question has already been addressed. Myself i have a 1999 gs400.
The amplifier for the sound system is in the trunk on the right hand side of the car attached the the vertical panel on the trunk side of the rear seat. On most sound system options, this amplifier has a pre-amp required for the factory radio. If you are installing an aftermarket radio, you will need a bypass plug to eliminate the on board amplifier yet utilize the existing wiring and speakers.
Are you trying to add amplifiers? If so the best way is to use LOC (line out converters) and your RCAs will run from them to your amp.
yes
bypass the factory amp
They make bypass plugs you can get at best buy or anywhere that sells car audio.
Without a bypass capacitor it is just equal to Rc
You can bypass the factory security system in your 2004 Chevrolet Impala by removing the factory security system fuse. You can find the factory security system fuse in the fuse box.
Use Metra kit 70-8116 wiring harness to bypass the jbl factory amp on a 2000 Toyota Highlander. JBL amp is located behind the passenger quarter panel.
You can not bypass or disable the factory alarm. It is part of the computer programming.