Need help in wiring stereo jack

Thread Starter


Joined Jan 20, 2009
Got stereo jack want use jack to disconnect the speaker when putting earphone into the jack.
The jack has four posts it is Amphenol brand model ACJS-MV35-3S.
Try find circuit or drawing on google how to hookup the jack run into company try selling stuff .


Joined Apr 2, 2020
This is the datasheet of what you have (find the pin out of your specific model with the 3S suffix.
with that, you can switch one thing like a power supply if it is used for power/charging for example.

Unfortunately, switching a stereo will be a challenge with this unless you have a microcontroller that senses when the single switch is disconnected.
Here is the example of plug in and plug out of what You have.
(See Figure 2 of this link

To complete your project easily, you should get the Jack on the attached datasheet above with the -5 suffix instead of the -3S suffix you have.
see figure 5 in the link (same link)

not that the jack with the -5 suffix has two switching elements (one for each stereo channel).


Joined Oct 7, 2019
The 35-3S is the same as the 35-3 but with a switch.
35-2 is simple, 1= ground, 3=signal. Headphones 1-3, signal=1-3
32-2s, the switch disconnects the speakers. Speakers from 2-1, Headphones 1-3, signal=1-3
35--3 is stereo, 1=gnd


Joined Jan 23, 2018
It sounds like you have a "3 circuit jack" with a single switch. And since the description is wanting to disconnect "a speaker"that is the correct part to use. The signal common side will connect to terminal #1 and the source will connect to terminal #3 The signal wire to the internal speaker will connect to terminal #2.