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MN190 · 17th March 2012, 08:22

I think David was mainly referring to the bit on the power plug

There is a mute line in the 8 way power plug (the one with the big black wire in). Normally this would be empty.

This may have been added by an installer, then cut when the phone system was removed. If this grounds, it will show 'phone mute' and quiet the radio.

17th March 2012, 08:22	#4
MN190 Posted a thing or two MG ZT 190+ Join Date: Nov 2006 Location: North Norfolk Posts: 1,423 Thanks: 2 Thanked 11 Times in 11 Posts	I think David was mainly referring to the bit on the power plug There is a mute line in the 8 way power plug (the one with the big black wire in). Normally this would be empty. This may have been added by an installer, then cut when the phone system was removed. If this grounds, it will show 'phone mute' and quiet the radio.