Didn't do this today, but I did a bunch of stuff to the interior this weekend. First off I finished adding my glass break sensor to the factory alarm. I tried to add a shock sensor, but couldn't get it to work after many different attempts so I ended up just going without it.:: angry ::
I also added an aux input to the Sequoia stereo that I have in my Supra.
I bought it on ebay for cheap because it is the old model, the new model does the same thing but you can control your ipod from the stereo with the new one. I don't have an ipod or iphone so I didn't need the new model.
Here is the actual "brain". It just plugs into the back of the stereo where the cd changer plug is. On the other end there are RCA jacks that allow you to hook up the devices.
The radio out and the device working!
I hid the device in the center console under the seat and mirror switches, and ran the RCA to 3.5 mm cable out from under the console to come out on the drivers side of the console near the seat belt. It sounds much better than the cassette adapter I was using as an aux input, and it also looks cleaner.
Another thing I did was put in my new leather shift boots and armrest cover from Redline Accessories in the Supra. These things are awesome! The saddle brown color is pretty much a perfect match to the factory maroon color. I posted a full review of these in the General MK3 Section.
I also gave the Supra a bath to get all the nasty pollen off.