3rd-Gen (2016-2019) Toyota Tacoma Mic Adapter (Low-Profile Mini Fuse Type)

$75.00

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Description

Tombit’s 3rd-Gen Toyota Tacoma Mic Adapter is a complete plug-and-play solution for 3rd-Gen 2016-2019 Toyota Tacoma owners looking to install aftermarket head units into their trucks while also retaining use of the overhead OEM factory microphone. This adapter does NOT require cutting into/modifying any factory wiring harnesses. There’s no need to remove the overhead console assembly or fish wires as the adapter is installed inline with the head unit. You simply plug the harness in, attach the ground lug to your truck’s frame directly behind the stereo, plug the low-profile mini fuse tap-a-fuse adapter into a fuse slot located in the fuse box under the steering wheel (or into an aftermarket head unit/Maestro unit that utilizes a low-profile mini fuse socket) and plug the mono mic cable into the aftermarket stereo’s mic input and you’re done. If you ever need to re-install the factory OEM head unit, the adapter installation is completely reversible and leaves no trace.

This adapter is confirmed to work with 2016-2019 Toyota Tacoma Trucks. The adapter is NOT compatible with the 2020 and later model years as Toyota redesigned the OEM head unit and wiring harness for those model years. A version of the adapter that will support the 2020 and later model trucks is currently under development.

!!! IMPORTANT !!!

This version of the adapter is specifically designed to be wired into a fuse slot located within the fuse box under the steering wheel (the adapter can also be powered by an aftermarket head unit/Maestro unit that utilizes a low-profile mini fuse socket.)

This adapter’s microphone jack and included 3.5mm mic cable (the orange cable) are wired (click here for a diagram) with the tip connected to mic + (signal) and the sleeve connected to mic – (ground.) This is the standard convention for 3.5mm mic cable wiring and what most aftermarket head unit manufacturers adhere to for their mic jacks. There have been some customers with Dasaita aftermarket head units who have discovered their head unit mic jack’s wiring has been reversed, subsequently causing issues with noise/distortion.

Please note, if the item shows as “Out of Stock” there are more on the way as these are made in small batches. Please check back frequently to check availability.

FAQ

Below is a list of commonly asked questions we get related to the 3rd-Gen Tacoma Mic Adapter…

Q: Will this adapter work with my <insert vehicle year/make/model>?
A: Probably not. Automobile manufacturers use a myriad of different head units, overhead microphones and wiring harnesses, even across vehicle generations (e.g. This adapter does NOT work in 1st/2nd-Gen Tacomas because the OEM head unit, microphone and wiring harnesses are different.)

Q: Will this adapter work with my 1st/2nd-Gen Tacoma?
A: No. The 1st/2nd-Gen Tacomas use different OEM head units, overhead microphones and wiring harnesses.

Q: Given the answer to the previous 2 questions, will you develop an OEM microphone adapter for <insert vehicle year/make/model>?
A: Maybe. The 3rd-Gen Tacoma OEM microphone adapter was developed out of our own necessity (the owner of Tombit owns a 3rd-Gen Tacoma and needed a solution to use the OEM mic with his aftermarket head unit.) We get this question quite often and my response is this – “We’re certainly open to the idea of developing adapters for other years/makes/models of vehicles; however, there needs to be a significant demand because there’s a fair bit of R&D, testing and production costs associated with these adapters so the ROI has to be there.

Q: What’s up with the 2-amp fuse? Does this adapter pull that much current?
A: If there was ever a malfunction within the adapter, the internal circuity would be destroyed (by design) before the 2-amp fuse would blow. So why is the fuse there? The fuse is there out of an abundance of caution. Once installed, this adapter will be sitting behind the head unit in the dash, likely never to be seen again for the remainder of the vehicle’s life (or at least until someone decides to replace the head unit again.) In the event the adapter’s 12VDC power supply line were to be crimped/damaged during head unit installation or the power supply line were to separate from the adapter, the only thing standing between a complete short to chassis ground is that fuse. So yes, the 2A fuse is there for a good reason.

Q: What’s the current draw/power consumption of the adapter?
A: The current draw of the adapter is negligible at ~13mA with total power consumption at ~150mW

Q: Is this adapter made in the US?
A:
Kind of. Here’s the truth of it – Many of the parts that make up the adapter are not manufactured in the states and if they were, they’d be so expensive that it would result in the adapter costing 3x to 4x what it does now (possibly even more.) With that said, we make a concerted effort to source components from US vendors whenever possible (albeit, many of these components are still imported but that’s the world we live in.) The adapter PCB is manufactured by whichever board house (domestic or overseas) has bandwidth, the required components and a fair price. At the end of the day though, the adapters have been designed and are assembled and tested in Lancaster County, Pennsylvania. Although I utilize an SMT assembly process with my various board warehouses, I personally hand-solder all of the through-hole components, inspect each PCB, assemble each adapter and test each and every adapter.

Installation Instructions

Installation is straightforward as the harness was designed to be plug-and-play; however, if you’re uncomfortable/unfamiliar with working with automotive electrical systems please don’t hesitate to seek the help of a automobile audio installation professional. If you run into issues during the installation process, please feel free to reach out to us via our Contact Us form and we’ll do our best to assist!

 
Important notes regarding adapter installation

  • In an effort to ensure both your safety and to prevent damage to your vehicle, please be sure to disconnect the negative cable from the vehicle’s battery before beginning adapter installation.
  • While it’s unlikely it would ever need to be replaced, do NOT under any circumstances replace the 2A fuse that’s already installed in the adapter with anything other than a 2A low-profile mini type fuse. Do NOT swap the position of the 2A fuse that’s already installed into the adapter into the empty position!
  • When you’re connecting the adapter’s male/female harness connectors to the vehicle and head unit harnesses be sure to use extreme caution so as not to bend the pins of the connectors. The pins of each end of the 28-pin harness are inspected as part of our QA process, but the pins can be bent/damaged during installation if things aren’t aligned correctly. We had an occurrence where steering wheel controls were no longer functioning after adapter installation. It was discovered that one of the pins in the adapter harness connector had bent. Unbending the pin and reconnecting the harness corrected the issue so all of that to say, just use caution when connecting the 28-pin connectors. If you feel an excessive amount of resistance when trying to seat the connectors it’s best to stop, examine the pins in the connector and try again.
  • We advise against modifying the adapter to draw power from other power sources within the vehicle.

 

Disclaimer
Automobile manufacturers do not look fondly on aftermarket accessories that interface with OEM wiring harnesses/vehicle electronics. While there’s little risk of damage to your vehicle by installing/using this adapter, it’s likely the manufacturer of your vehicle would consider the use of this adapter a reason for voiding any warranty claims associated with the head unit and/or vehicle head unit wiring harnesses. By installing this adapter, you assume all risks associated with its use.

 

Installation Instructions
(It’s assumed you’ve already removed your factory head unit in preparation for installing an aftermarket head unit)

Step 1 – Ground Lug Connection
Using a ratchet with a 10mm socket, remove the bolt encircled in the image below. Place the bolt through the ground lug attached to the Tombit Tacoma mic adapter and using your fingers, screw the bolt back into the hole. Hand-tighten at first and then using your ratchet and 10mm socket, snug the bolt (do not overtighten!)

 
Step 2 – Power Connection

  • Option 1 – Powering from In-Cabin/Under-Dash Fusebox

    This low-profile mini fuse version of the adapter was designed with a low-profile mini fuse add-a-fuse adapter with enough wire lead to be routed/connected to the in-cabin under-dash fuse box. To connect/power the adapter to/from the in-cabin under-dash fuse box:

    1. Route the low-profile mini fuse add-a-fuse adapter/red wire from the head unit compartment down to the area under the dash just to the left of the steering column being sure to keep the wire clear of any moving/rotating parts (pedals, steering column, etc.) where the wire could run the risk of being entangled/damaged.
    2. Remove the cover from the fuse box.
    3. Identify a fuse slot that has key-on power. We recommend using the “P/OUTLET NO.1” slot or the “P/OUTLET NO.2″/”USB” slot (click here to view the 3rd-Gen Tacoma fuse box diagram.)
    4. Remove the fuse from the slot you’ve identified in step 3 and place that fuse into the empty side of the Tombit mic adapter’s add-a-fuse tap.

      Do NOT swap the position of the 2 amp fuse located in the Tombit mic adapter’s add-a-fuse tap with the fuse you removed from the vehicle’s fuse box within the Tombit mic adapter! It’s important the 2 amp fuse included with the Tombit mic adapter remain in the top slot of the Tombit mic adapter’s add-a-fuse tap.
    5. Insert the Tombit mic adapter’s add-a-fuse adapter into the now vacant fuse slot you removed the fuse from in step 4.
  •  

  • Option 2 – Powering from aftermarket head unit

    If your aftermarket head unit utilizes a low-profile mini fuse it may be possible for you to power the Tombit mic adapter from the head unit’s fuse slot. To connect/power the adapter to/from the aftermarket head unit:

    1. Ensure your aftermarket head unit utilizes a low-profile mini fuse type slot. Click here for help in determining what type of fuse your aftermarket head unit uses.
    2. Remove the fuse that is supplied with your aftermarket head unit and place that fuse into the empty side of the Tombit mic adapter’s add-a-fuse tap.

      Do NOT swap the position of the 2 amp fuse located in the Tombit mic adapter’s add-a-fuse tap with the fuse you removed from the vehicle’s fuse box within the Tombit mic adapter! It’s important the 2 amp fuse included with the Tombit mic adapter remain in the top slot of the Tombit mic adapter’s add-a-fuse tap.

      If you need to replace or supply your own fuse for your head unit, be sure to use a fuse that matches the amperage of the fuse specified by the head unit manufacturer!
    3. Insert the Tombit mic adapter’s add-a-fuse adapter into the fuse slot on your aftermarket head unit. Please note, depending on the design of your aftermarket head unit, you may/may not be able to insert the Tombit mic adapter’s add-a-fuse adapter into the head unit. If this is the case, you’ll need to revert to using “Option 1 – Powering from In-Cabin/Under-Dash Fusebox.”

 
Step 3 – Vehicle & Head Unit Harness Connection
Connect the 28-pin male/female Tombit Tacoma mic adapter harness connectors to the vehicle connector and the head unit connector (encircled in the image below.) Be cautious not to bend the pins of the connectors!

 
Step 4 – Microphone Connection
Insert the 1/8″ (3.5mm) microphone cable from the Tombit Tacoma mic adapter into the microphone port of your aftermarket head unit (encircled in the image below.)