I have a 2003 toyota rav4 and I'm trying to install a new Pioneer double din stereo. I've wired almost everything up correctly and it runs without any issue, except the stereo always thinks that I'm driving, i.e., it thinks that the parking brake is always disengaged. This means that I can't use certain functionality in the stereo.
Below you can see:
- the parking brake switch (brown box)
- red and black wire which was originally there
- light green wire which is the parking brake wire that comes with the Pioneer harness.
The instructions in the Pioneer manual say that the light green wire should be connected to the power side of the parking brake switch, however, the switch in the picture only has one wire coming out of it (the red and black one). Thus, I assumed that the red and black wire must be the power in side. As you can see, I connected the light green and red/black wires using a wire tap connector.
The problem is that the Pioneer stereo still thinks that I'm driving, even when the parking brake is up.
How does the parking brake switch even work? What happens when the parking brake is pressed down? Does that close a circuit, thus grounding the red/black wire? Shouldn't the switch have a ground wire coming out of it somewhere (it only has the red/black wire)? Or since the switch is connected to the metal chassis does it not need the additional ground wire?
I read something about Pioneer stereos requiring a high-low-high signal in the green wire at a particular frequency, this is pretty confusing to me and it's very hard to find documentation on the subject.
Thanks for the help.