How to install a 2009+ OEM Radio w/AUX-IN in 2005-2008 Tacoma

It was wired for JBL already. A few things did surprise me though. When they added bluetooth in 2009 they also updated the amplifier. Since the speed sensor and bluetooth voice input all run through the amplifier I thought I would need to update that as well. This was not the case. I used the same pin configuration from the FSM and was pretty excited when that obnoxious loud voice from the bluetooth radio started shouting instructions to me. I have a pretty scattered/unorganized thread about all the stuff I did to make the BT work here if you are interested.

I could definitely see where a JBL harness would be very handy for someone who wanted to upgrade. I have seen head unit and amplifier combos go for pretty cheap. It kind of reminds me of this pdf installation I saw for tundras. I attached it in case you haven't seen it yet. It basically goes through the steps for upgrading a tundra that did not come with a separate amplifier to a nav unit which requires a separate amplifier.

One request though... How do you find part numbers for the harness pins? I had a few extra that I swiped from a wrecked tacoma but I didn't know what I was looking for at the time. They work for now but I would like to get the right ones eventually.

 

Reference the Connector List and Part Number Of Connectors sections of the OEM Wiring Manual (see link below). Then, cross-reference connector part # in the Toyota Wire Harness Repair Manual (see link below) to get corresponding Wire/Terminal part #.

2005 Toyota Tacoma OEM Wiring Manual:
http://www.customtacos.com/tech/files/05FSM/wiring.html


Toyota Wire Harness Repair Manual:
http://www.scribd.com/doc/21980878/Toyota-Wire-Harness-Repair


For 2009+ connectors/terminals, I usually subscribe to Toyota TIS for 2 days ($15) and reference their interactive EWDs.

Toyota Technical Information System (TIS):
http://techinfo.toyota.com

 

On a related note, for those of you interested in converting your non-JBL audio system to JBL, I have designed a virtually plug-n-play solution:

http://www.tacomaworld.com/forum/audio-video/199737-non-jbl-jbl-conversion-harness.html

 

Do you know why the OEM Aux-In Jack has the two resistors in place? I have done the same type of mod to a number of Subarus (installed newer radio with aux in capability) and made up a aux in harness that had a single wire that you connected directly to ground to enable the aux input on the radio. Not sure why the radio would want to see a 15.05K resistor if the aux cable was not inserted in the jack and then a 2.76K resistance when the cable was inserted in the jack.

I have a 2011 non JBL radio that I will install in a 06 tacoma. My plan was to add the necessary pins to the existing 20 pin connector to bring out the aux connector to a standard stereo plug and connect the AUXI signal (Conn R3-19) to AGND (Conn R2-18).

Do you see any issue with doing this?

Thanks

 

As stated in NOTES:
1. Internal switch (in jack module) closes when audio plug inserted.
Resistors R1 & R2 are then in parallel (2.76k), pulling AUX-In
Enable signal (AUXI) low, signaling radio that AUX-In is active,
automatically selecting AUX-In as source.

Yes, grounding the AUXI signal will permanantly enable the AUX in port. Obviously, this is not ideal considering you have several sources (AM/FM/SAT/CD).

 

All i can guess is that the radio prefers to not see a open circuit when the aux plug is not inserted (i.e. 15K resistor), and that the parallel combination of 2.76K pulls the signal low enough to enable the radio.

I do not have the external aux jack (yet). I will take a 3.5mm harness, attach pins to the right & left audio, and the shield. connect them to the correct pins in the existing 20 pin connector in the truck. add a 2.76K resistor to two pins and add that to the existing connector pins 19 and 18. That will enable the aux input all the time. This would mean that I might have to touch the aux/disc button two times to select the aux input if I have a disc in the unit.

 

was you able to perform this mod ?

 

Subbing for my 09 base.

 

http://www.tacomaworld.com/threads/add-aux-to-2005.529956/