Metra 70-8116 Amp Bypass Harness
Crutchfield Customer Review (What's this?)
Our experts help you pick the ideal gear for your needs.Meet our advisors
Free tech support for the life of your gear.Read about our one-on-one expert help
You may return items that are complete and like new for any reason within 60 days.See the details of our return policy
Earn one point for every dollar you spend and use those points to save on future purchases.Get full details on Crutchfield Rewards
We offer vehicle-specific installation instructions, dash kits, wiring harnesses, and speaker accessories at deeply discounted prices with car stereo and speaker purchases. Available for most vehicles.Learn more
Our customers have trusted us with their business, and they’ve helped us win awards for our service.Check out our most recent awards
The manufacturer’s warranty always applies.See more details
Item # 120708116 | MFR # 70-8116
$29.99 Earn up to 30 Rewards points
Metra's 70-8116 harness lets you install an aftermarket stereo in select 2000-06 Toyota vehicles, bypassing the factory amplifier. The harness includes a 17-foot 16-gauge cable that connects at one end to the output plug of your factory amplifier, and on the other end to your aftermarket receiver. Warranty: 1 year.
Please enter your vehicle information or call an Advisor at 1-888-955-6000 to find out if this model is compatible with your vehicle.
Note: Most vehicles will require additional installation parts please identify your vehicle if you haven’t done so. You can also call an Advisor for more information.
Average Customer Review(s):
I installed this on a 2002 Toyota Land Cruiser. I was unable to use the ground wire on this harness. I consulted the factory wiring manual and determined I had to run a separate ground in the dash area for the new head unit. I wired it all up and the power antenna was not working. I called Crutchfield and they told me it was a vehicle problem if it was all hooked up correctly. My factory stereo had been operating the antenna just fine. I used a volt meter and determined there was no power out of the connector going into the antenna yet there was power going into the connector. I separated the connector and looked at the male terminal. It had recessed so far back that it would not make contact. I had to slide the terminal inside of the connector further into the other side. It began working after that. The connector did not appear to hold the terminals in very well. It did work after I fixed that issue. It could have been caused during installation or it could have been faulty. All is well now and I would recommend this.
Pros: Easily connects the new head unit with the speakers.
Cons: Terminal was not tight from factory.
The directions were lacking but a quick call to tech support got me on my way. Easy to install, does the job perfectly.
Pros: Worked very well done wiring involved to get fully hooked up, but works very well just had to find amp under passenger seat
Cons: Very long cables only 10 ft needed max got 17 ft
Not direct plug and play, some wiring needed for the land cruise but if you know what your doing its not an issue.
Works great. You'll need upholstery tools to get to the amp plug behind the rear seats in the 2002 Highlander w/ JBL. I cut the 4 wires for the subwoofer since they weren't required. Ran the wires under the R passenger door trim up to the radio. Would be nice if there were instructions on how to get to the rear amp plug...
Pros: Works great.
Cons: Getting to rear amp plug is not that difficult, but there were no instructions on how to get to it.
If you own a 2000-2002 toyota landcruiser, this will work but is not plug and play. First off, Toyota has a feedback loop for power to the head unit via the factory amplifier. The radio connections in the upper dash have several feeds coming from the factory amplifier. So if you use the factory connections in the upper dash and you are changing out the amplifier you will need to tie wires together at the amp location for power, accessory and ground. In this kit, there's the 17ft long speaker harness that plugs into the amplifier under the passenger seat and there's also another harness that has red, yellow ground and blue.. This is where the problem is. By simply plugging in the harness behind the old radio, your new headunit won't work. You must remove three wires under the passenger seat and crimp or solder them for your power. Also the ground wire must be attached to the chassis and not your typical "black" wire behind the radio. I called Crutchfield support twice and they only had the info on the ground wire. THIS ONLY PERTAINS TO THE 2000-2002 Landcruiser.
Cons:Crutchfield response on 7/1/2014 This is the kind of problem that our Tech Support team loves to solve. They have looked into it and will be adjusting our database for this harness. As a Crutchfield customer, any time you run into an unexpected problem, our support and troubleshooting is only a phone call or email away.
It works well and the wiring instructions were fine, It did not include instructions on bypassing the amp however. I had to call for tech help a couple of times. Also, when bypassing the amp you lose the use of the large 'woofer' speaker on the rear deck - that was never disclosed either. Installed on a 2002 Avalon with JBL system (4 speakers plus woofer).
The Metra Factory Integration Adapter worked great. It was easy to install without cutting any factory wires. When I get ready to get rid of this car I could put the factory system back in in less than 30 minuets. Glad I found this before I started cutting the factory harness out.
Used on my 2002 Toyota Avalon. The instructions were very clean and all the colors matched up perfectly to my new head unit.
Pros: Plugged it in and was ready to reinstall my trim.
Cons: Had way to much extra wire. Probably around 10 extra feet.
Adapter works, I have 2000 Toyota landcruiser, no issue with the HU harness adapter. However there are two wiring harness with the factory amp. If you just plug in the metra adapter, without making 3 other wire bypass connections, your radio will not have power. Since Toyota radio power is getting feed from the amp. I was on phone with Crutchfield about this 3 times. Even the crutchfield techs weren't aware of that.
Pros: Fits peferct
Cons: Not a plug and play, need extra wiring
Worked fine with my 2001 Land Cruiser for the connections that were provided on the adapter.
Pros: Good wiring diagram included.
Cons: Note: there is no connection for the Illumination wire using the adapter (even though it exists on the factory radio harness) - an additional splice must be made from the new head unit harness into the original factory radio harness.
The hard part here was finding the location of the Amplifier behind the rear seat under the carpet in the cargo area before I could plug in the Bypass plug. I called tech support and they emailed me pictures that were very helpful in finding the amp to bypass.
Crutchfield Wiring Harness: Crutchfield wiring harnesses prevent you from having to cut your vehicle's factory radio plug when replacing your factory radio with an aftermarket head unit. Simply solder or crimp the Crutchfield wiring harness to your aftermarket head unit's harness (solder & crimps not included), plug the aftermarket head unit's plug into the rear chassis of the aftermarket head unit, and plug the Crutchfield wiring harness into your vehicle's factory radio plug.
Note: Installation tools, hardware, & accessories are not included & sold separately. Please see the Accessories tab for recommendations & availability.
Wiring Notes: If the Crutchfield wiring harness is not equipped with a ground wire, you will need to ground the aftermarket head unit's ground wire to the metal chassis of your vehicle. Some vehicle's may require you to bypass the vehicle's factory amplifier (in another location from factory radio) or hardwire certain connections. If your vehicle is equipped with factory steering wheel controls, an additional adapter is required & sold separately.
Wire Code Chart:
|Red||+12 Volt Accessory|
|Yellow||+12 Volt Constant|
|White||Left Front Speaker +|
|White/Black||Left Front Speaker -|
|Gray||Right Front Speaker +|
|Gray/Black||Right Front Speaker -|
|Green||Left Rear Speaker +|
|Green/Black||Left Rear Speaker -|
|Violet||Right Rear Speaker +|
|Violet/Black||Right Rear Speaker -|
|Green/White||Subwoofer 1 +|
|White/Red||Subwoofer 1 -|
|Brown/Yellow||Subwoofer 2 +|
|Brown/Blue||Subwoofer 2 -|
Harness Location: The factory plug that mates with the Power Harness is located in the factory radio cavity of the vehicle. The factory plug that mates with the Speaker Harness (used to bypass factory amp) is located at the external factory amp location (in rear of vehicle). The 17' speaker harness will need to be plugged into the output harness of the external factory amp and then run up to your in-dash aftermarket head unit for speaker wire connection.
Note: An external aftermarket amplifier is recommended to connect the factory subwoofer channels (if present) of the wiring harness in order to power your vehicle's factory subs.
The Crutchfield Car Selector: Please visit theCrutchfield Car Selector for your specific type of vehicle.
At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.
i purchase the wrong Harness for my highlander.[ N Sep 13, 2017 ]
I did not want to use my old amp with new 4 ohm speakers.[ Justin Jun 27, 2017 ]
OEM look and feel. No need to cut or trim cables[ Alvaro Sep 01, 2016 ]
For additional details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will integrate and what you will need for an installation in your vehicle.[ Kenny May 13, 2017 ] Staff