Turning off the ignition will still turn the stereo off in accessory mode. One quirk with this design is that the head unit will stay in accessory mode even if you try to change function (CD, radio, etc.) or power it off until you turn off the aux switch. your iPod) and you should hear it playing through the stereo. When it is on the head unit should display ACCS.Ĭonnect the audio plug into a suitable source (e.g. Solder the connections to the 13-pin DIN plug as shown in the diagram below.Ĭonnect it to the back of your stereo. I’m not sure what the exact purpose of the connector on CeNet units is, however it’s certainly useful for this project! Equipment
Head units only featuring the round 13-pin DIN socket may not work as they probably use the older C-Bus protocol instead of the more modern CeNet. There is a list of models I have tried this with at the bottom of the page. You will need to remove your head unit to check this. If your car was manufactured in the late ’90s or later and has a Clarion or McIntosh OEM stereo (many Japanese imports do), this project may allow you to add a proper auxiliary input for your iPod, laptop or anything else.Įligible head units should have both a round 13-pin DIN socket and square 13-pin CeNet socket on the rear panel of the head unit, similar to that shown on the photo below.