Adding a headphone jack to a 2004 4Runner - Toyota Nation Forum : Toyota Car and Truck Forums

candreas · 06-23-2004, 05:12 PM

Is there anyway to add a headphone jack in the front of a 2004 4Runner Sport that does not have rear audio? Is there a product that already does this? Any information is greatly appreciated!!

Luc · 06-23-2004, 06:23 PM

No.

candreas · 06-23-2004, 06:36 PM

What about wiring into the speaker outputs from the radio?

Luc · 06-23-2004, 11:02 PM

If you can match the impedance of the headphone jack to the audio output, then it's possible. It won't be a simple tap.

candreas · 06-24-2004, 06:59 AM

What is the speaker / channel impedance in a 2004 4Runner 8, 4, or 2 ohms? As long as the impedance is higher I shouldn't damage the radio, correct? I believe most headphones are 16 ohms...

candreas · 06-24-2004, 07:59 AM

Any idea how to get the dash apart to get to the radio?

Luc · 06-24-2004, 08:14 PM

I imagine there is an OEM amp in there somewhere. Most of the time, built-for-Toyota amped-speakers have impedance of 3-ohms, but you can definitely see or measure that if you take the speakers out.

I don't know how the radio comes out. For the previous generation, the climate control knobs and panel need to come out along with the dash bezel.