1996 Toyota Avalon, Aftermarket Head Unit
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=50336
Printed Date: May 20, 2024 at 7:21 PM
Topic: 1996 Toyota Avalon, Aftermarket Head Unit
Posted By: rsm425
Subject: 1996 Toyota Avalon, Aftermarket Head Unit
Date Posted: February 17, 2005 at 7:20 PM
I have a 1996 Toyota avalon with 6 speakers, AM/FM/Casette with factory (looks factory) CD player. They have went out and the plug on the back of radio is different than the installation harness thats available. Does anyone know what wires are what? Please help if possible! Scott
Replies:
Posted By: forbidden
Date Posted: February 17, 2005 at 8:22 PM
Snif, snif....smells like BOSE and a full system rewire. A installer in Nanaimo,BC, just called me about the exact same vehicle, just a 95. The harness is totally different and IIRC there is no harnes that integrates into it. Do you have speaker impedence showing in the molex?
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Top Secret, I can tell you but then my wife will kill me.
Posted By: rsm425
Date Posted: February 17, 2005 at 9:11 PM
I found an old post on here that said it has an amplifier because it is 6 speaker and it listed this adapter metra 70-8112 to be used for it. I checked Metra's website and it says thats what its for. Any ideas? SCott
Posted By: rsm425
Date Posted: February 17, 2005 at 9:12 PM
one more thing it has an equalizer built in.
Posted By: tech460
Date Posted: February 20, 2005 at 10:52 AM
70-8112 works for those HK systems.
Posted By: SilkSurgeon
Date Posted: February 20, 2005 at 1:29 PM
It sounds like you have a factory amplifier. You have two options you can One, use the amplifier integrator harness (70-8112). That harness has RCA's for the speaker wires so you will have to plug them in to your front/rear outputs on the back of our CD or cassette deck. If you only have one set of outputs you will need 2M-1F (two male one female) Y-Adaptors. If you only have one set of outputs on the back of your deck you will lose either your faderm balance or both. Two, locate the factory amplifier and unplug it, effectively bypassing the amplifier. In many toyotas it's right behind the factory radio. when you find the factory amp, there should be two plugs going into it and one coming out of it. You want to disconnect the two plugs coming out of the amp. These two plugs are the standard Toyotta plugs and should work with the Metra 70-1761 harness. Out of the two options I just mention I would reccomend the 2nd if at all possible. Being that your car is a '96 that amp is close to 10 years old, and by bypassing it now you can eliminate having to troubleshoot it down the line. In addition if your amplifier is bad now, then you will not want to integrate into a non-working amplifier!
Posted By: tech460
Date Posted: February 20, 2005 at 1:30 PM
Option two is true for some Toyota's but not all. Unfortunately, you cannot do that option on a Avalon. You have to either have to integrate the amp using the 70-8112 or bypass the amp by either running new wires to the speakers or to the output of the factory amp which is behind the glove box up high to the right. Not very easy to get to. If you do decide to bypass the amp make sure you keep it plugged in as power runs to the amp first then to the radio. Unplugging it would take power away from the radio harness.
Posted By: SilkSurgeon
Date Posted: February 20, 2005 at 1:33 PM
tech460 wrote:
Option two is true for some Toyota's but not all. Unfortunately, you cannot do that option on a Avalon. You have to either have to integrate the amp using the 70-8112 or bypass the amp by either running new wires to the speakers or to the output of the factory amp which is behind the glove box up high to the right. Not very easy to get to. If you do decide to bypass the amp make sure you keep it plugged in as power runs to the amp first then to the radio. Unplugging it would take power away from the radio harness.
Very good point I was even think about that as I was posting. Because I know the Avalons have that funky dash I figured their wiring would be funky as well LOL. Adding on to what you're saying if the amp is not behind the radio, then option two will not work and as you say the car does need to be rewired, which might be a pain but I'd do it, and get it out of the way so that when you want to replace a deck in the future you don't have to cross your fingers and hope the factory amplifier works.
Posted By: tech460
Date Posted: February 20, 2005 at 1:42 PM
I agree with you 100% Silk Surgeon as factory amps are garbage. If at all possible always bypass factory junk, especially 10 year old junk. I wish everybody would keep that mentallity as these radios out nowadays are extremely powerful for radios and usually better and cleaner than factory amps. There are exceptions to the rule though. Sometimes time and money do not permit or the factory amp may be better than the radios amp.
Posted By: SilkSurgeon
Date Posted: February 20, 2005 at 2:09 PM
tech460 wrote:
I agree with you 100% Silk Surgeon as factory amps are garbage. If at all possible always bypass factory junk, especially 10 year old junk. I wish everybody would keep that mentallity as these radios out nowadays are extremely powerful for radios and usually better and cleaner than factory amps. There are exceptions to the rule though. Sometimes time and money do not permit or the factory amp may be better than the radios amp.
Absolutely. and I think a good example is the Monsoon system found in many GM's and VW's now while I may not be a fan of the car Maker, the Monsoon system can sound pretty nice but I find that majority of factory amps are just a headache and an extra component to rewire or bypass.
Posted By: rsm425
Date Posted: February 20, 2005 at 7:52 PM
Thanks guys! Here's where i'm at so far. The amp is behind the glovebox. I hooked the new radio up but it would not come on just like the factory radio did. So i hooked the acc wire to the 12v batt wire to see if all was working there and it came on but there was no sound out of the speakers. So I am assuming that the amp is bad since it powers the radio? I have checked all the fuses in the fuse block under dash and even under the hood to make sure that wasn't the problem. If it is bad what can i do? Thanks
Posted By: geepherder
Date Posted: February 20, 2005 at 9:21 PM
Rewire it from scratch. Grab constant and accessory from the ignition harness, ground to the chassis, and run new speaker wires to all locations. You could probably get power and speakers at the amp, but why not do it right?
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My ex once told me I have a perfect face for radio.
Posted By: rsm425
Date Posted: February 20, 2005 at 9:27 PM
Thinkin thats what i'm gonna have to do. Can anyone steer me in the right direction on finding a wiring schematic?
Posted By: geepherder
Date Posted: February 20, 2005 at 9:52 PM
Posted By: tech460
Date Posted: February 21, 2005 at 10:52 AM
There is no power on one of your two power wires because you either accidentaly blew a fuse wiring the radio up or the wiring harness is defective. Solve that and you should get your radio to power up. Now as far as the amp not coming on, that is most likely due the blue wire in the harness not being hooked up. Is yours?
Posted By: rsm425
Date Posted: February 21, 2005 at 11:09 AM
The thing is is that nothing was unhooked. The left side speakers quite working on FM but worked with cassettes and AM the everything went dead after a while. Is there any "hidden" fuses? The book says that there is one behind the passenger kick panel but there's nothing there but a wiring junction box.
Posted By: tech460
Date Posted: February 21, 2005 at 11:26 AM
Well, that changes things a bit. Knowing that, which does not make sense, I would definitely not use the amp. Run new wires to the speakers and either inspect the speakers with a multimeter and use them or install new speakers.
Posted By: rsm425
Date Posted: February 21, 2005 at 2:33 PM
Well i guess the easiest way to find the speaker wires comin out of the amp and splice into them. Is it the really big plug that is the output or the smaller one?
Posted By: tech460
Date Posted: February 21, 2005 at 2:38 PM
I do not remember but I can tell you that is is more difficult going to the amp and bypassing it there than it is to just run them straight to the speakers. The amp is hard to get to and the wires are real short. Also, you will be playing the guessing game with speaker polarity if you do not have the schematics.
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