Hi All,
I have searched the whole electrical section but with no direct answer to my problem so apologies if I've missed it.
I fitted a Nokia CK-7W H/F kit to my 2003 3.2 Elite NCDC 2013 radio some time ago but could never get the radio to mute so that car speakers could be used & to display 'Phone'. I connected via the 18 pin phone pre-wiring VDA plug behind glove box using Autolead 06-109B due to the Bose as advised by Autoleads & Terry at Sio Communications ( before things went pear shaped for him ). The ignition live/constant live and earth are fine so I still use the 18 pin plug but have had to fit the Nokia speaker. I have always used the Nokia mic so this is not an issue. I have seperated the VDA plug from its holder in the past to check that the wires correspond to the kit & they all appear OK. The yellow mute wire from H/F kit comes out of the VDA plug to radio as black as it should but I don't know where it goes from there as I have not yet removed NCDC 2013. The car has not been modded as I have had it from almost new & knew the previous owner. After another chat with Autoleads technical guys they suggested buying relay 06-100B but I have nowhere to fit it. There is no relay space under steering column relay board/ behind fuse board under dash or behind the glove box. I do not have Traffic Master so don't see this as an issue. The phone works fine as it is with me manually turning the radio down but the snob in me (and a comment from 'The Boy' in a previous post refering to crappy Nokia speaker as fitted by lazy fitters)

wants it to work properly. The phone is a Nokia 6230i (old I know but it has voice dial) & sits in correct Nokia cradle. This is starting to bug me now along with the fact that Mrs YZ250 keeps kicking the Nokia speaker when she moves her feet around in the passenger footwell. The Sat Nav mutes the radio fine so I was hoping to pick the brains of you guys and gals on this great Forum before I decide to pull out the NCDC 2013 to investigate further or just leave it as it is. Is there a 'safe' way of testing radio mute when I am only armed with a 12V bulb style pin tester? I assume that the mute line is pulled to 'ground' during a call but my radio will not do that so it is the car at fault, not the kit.
Any guidance much appreciated.