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I just finished installing a Kenwood Head Unit and used the Kit210/ M.O.S.T HUR 997 module. The installation is not for the faint of heart. I have installed many radios and worked on mods to my previous Porsche's. This took some serious investigation and decoding to see what wires need to be attached to wires in the harnesses. To some extent I was fortunate that the previous owner had an after market unit installed, but had remove nearly everything.
Navigation ( I located the GPS antenna way back under the plastic cowling between the Battery and Cabin Filter)
Phone (tried to locate the mic in the location of the factory mic, but proved to be too difficult for now. Located to left of the radio bezel by removing the small piece of dash and positioning the clip under that.
Volume and Chanel rotary dials on the Steering wheel multi use buttons.
Now the problems left over:
The Phone buttons don't seem to do anything. I need to use the buttons on the radio when placing/receiving calls. This is not major but would like everything to work as well as if a factory head unit was install. Again, it seems that the steering wheel switches are recognized, but not the phone buttons.
Is this maybe something that needs to be programmed in?