Question about Car Audio & Video
I have just had the same problem. I have a N reg vectra and just fitted a Maystar radio. I too was getting the PHONE IN message randomly when the ignition was on (fine when not).
I think the PHONE IN is a mute function to cut sound when a call comes in. On my connections it was the brown wire - it should tell you the "Phone in" connection in the manual or on the bottom of the radio. I disconnected this and taped up with insulation tape to avoid connecting with anything else. Worked for me!
Posted on Dec 10, 2007
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Posted on Jan 02, 2017
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