First post, but I've been reading quite a bit on the forum for the past couple of months. Tons of helpful information!
I have installed computer and touchscreen display in my veccy 2003 and want to control it using the steering wheel controls. But I have not been able to figure out how to read the resistance and/or voltage of these steering wheel controls.
The CDR2005 that was in the car has the sticker attached which shows pinouts.
What I've done is trying to check the resistance and voltage between the SWC pin and ground, 12v, aerial, ext.ill. But I can't see a change in resistance/voltage when pressing the buttons on any of these.
I'm quite sure I am not seeing something quite obvious here, but what? I would be really greatful for some input as I feel completely stuck.
Here is some background info for what I am trying to do http://www.mp3car.com/vbulletin/inpu...-controls.html