wb6vpm Posted July 11, 2019 Share Posted July 11, 2019 I have a base 2013 TC, and I need to know the best place to tap the following wires: parking brake reverse/backup lamp Vehicle speed sensor pulse if anyone has pictures or even a wiring diagram, that would be great! Thanks in advance! Quote Link to comment Share on other sites More sharing options...
Fifty150 Posted July 11, 2019 Share Posted July 11, 2019 (edited) I don't have a 2013. But I have installed a few stereos. A lot of aftermarket head units have a wire for the parking brake. This is so that the unit can display video entertainment. And to prohibit the video display if the parking brake is not set; so that you can't watch videos while the vehicle is in motion. The units which I installed, if I recall correctly; we simply grounded that wire to fool the head unit into believing that the parking brake was set. But double check by researching your stereo make & model. There's usually a "hack" posted online for the installation. For aftermarket reverse backup cameras, the camera is typically powered by tapping the reverse lamp wire. This is easiest right behind the lamp socket. Pull out the lamp as if you were changing it. Test the harness to ensure that you have the correct wire for power. Then splice. On most aftermarket stereos, there is a wire which needs a reverse signal, so that the screen will display the backup camera video. Most backup cameras have a wiring kit with an extra wire running alongside the RCA video signal, which will deliver the power from the reverse lamp to the head unit. The VSS wire sends a series of pulses (from 800 to just over 1,000 per mile) only when the vehicle is in motion. If the VSS wire is not hooked up, the navigation system will not realize that the car is moving at all, and will be unable to track position. There is a work-around. Edited July 11, 2019 by Fifty150 Quote Link to comment Share on other sites More sharing options...
Beta Don Posted July 11, 2019 Share Posted July 11, 2019 15 hours ago, wb6vpm said: I have a base 2013 TC, and I need to know the best place to tap the following wires: parking brake reverse/backup lamp Vehicle speed sensor pulse With modern vehicles, many times there is no 'wire' you can tap into for the signals you want. When I installed a Pioneer Nav receiver in my 2014, the only way to get those signals was to use an 'adapter' made for the receiver I was installing. The signals are on the vans CanBus and the adapter picks them off and sends them to the receiver Don Quote Link to comment Share on other sites More sharing options...
Fifty150 Posted July 11, 2019 Share Posted July 11, 2019 Maybe with the 2013, you can also buy the harness adapter. Then you won't have to splice into any OEM wires. Quote Link to comment Share on other sites More sharing options...
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