I have an red and white sound aux input panel that is connected to my cars stereo. From my understanding of a red & white aux cable is that essentially there is a max of 3 connections, the ground the left and right. But as you can see from the disassembled pictured of the unit below the PCB actually has a connector with 8 pins. I've labelled the pins in white in accordance to the technical manufactures specs. Although there is 8 pins, there are actually only 4 of those pins that actually connect back to the stereo. 3 of which make sense just like I thought but the 4th connection which is pin number 6 seems to be something called Line In shielded cable. What exactly does that do? I wanted to completely remove this so I can wire in a permenant audio source into the aux input from a left, right and ground cable. What do the other pins on this PCB actually do? Thanks
There is also the following schematic from the manufacturers docs which shows the aux panel pins 2,3,6 and 7 on the left going to the radio. The pins 2,3 and 7 seem to make sense just like a normal audio cable if i was to completely bypass it but the pin 6 I don't understand what does that do? There is essentially a wire coming to pin 6 in the loom of the connector from the radio.
There is also the following schematic from the manufacturers docs which shows the aux panel pins 2,3,6 and 7 on the left going to the radio. The pins 2,3 and 7 seem to make sense just like a normal audio cable if i was to completely bypass it but the pin 6 I don't understand what does that do? There is essentially a wire coming to pin 6 in the loom of the connector from the radio.
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