This guide has been very helpful so far. Thanks for that.
Question for the knowledgeable - where did you put the ground(s) for your aftermarket head unit and other components that needed ground wires? The harness black wire says it's for Subaru only, but it seems like there is what looks like a ground wire going into that port from the car. Can I tie my grounds into that? Or must I ground each wire separately to the frame?
First time I've installed my own HU on my own...I did about 15 years ago on a different car, but with help. Use small words