[eliseer]

I am installing sonyericsson HCB-700, the only missing part is the mute pin on the back of the stock radio. I searched and tried the 1L, seems it is for the older models. the new one is called lighting on 1L.

so what's the new solution other than buy an advanced mute unit?

 

[mk706]

this is the first i've heard of the pins changing. you're best bet is to test the wires using a digital multi-meter. with the radio plugged up & the car on, use your DMM to test the pins in question. use the process of elimination. test pin 1L first, if it doesn't test mute, move to the illumination wire 1E, and so on. when testing the wires, mute should regeister negative (-).