Navigation Ebrake Bypass

 DIY Nav unit in FRS with e-brake bypass and iPhone cable by cupholders

What you need:
Standard Toyota Wiring harness ( I used Metra IBR-WHTY2 )
Lexus Antenna Adaptor ( I used Scosche LSAAB )
Scion dash kit ( I used Metra 95-8202 but had to modify it )
PAC TR7 ( optional for nav handbrake bypass )
10mm socket
screwdriver
wire strippers
electrical tape
soldering iron / solder (optional but recommended )
Drill ( optional for cupholder area iphone connector )

I already had my aftermarket head unit in, but I wanted to add an iPhone cable and run it to the cup holder area, so I decided I would do a write up with some photos.

1. Start by removing the trim piece above the glove box. There are 6 clips holding it in. Just pull on it and it will come off fairly easily.

2. Remove the trim panel where the head unit is.



3. Remove the 4 10mm bolts holding the radio in. Remove the radio and disconnect all the harnesses from the back of it.





4. Remove the 2 metal brackets off the stock head unit and put them aside as you will need them later.

5. If your new head units wire harness has wires of different lengths, I would recommend cutting them so they are all the same length. After doing that, strip the ends of all the wires.

6. Wire up all the wires from the Toyota wire harness and the aftermarket head unit wire harness. If you have a soldering iron, solder all of your connections. Soldering insures that the wires won’t come apart and that they have a good connection.

NOTE: Be sure to connect the remote wire from the new head unit to the power antenna wire on the Toyota harness ( blue/white stripe to blue ). This will be the turn on for the factory amplifier in the trunk that powers the door speakers. If you forget to do this, you will have no sound out of the door speakers.

Also, I have found out through trial and error that our cars have power amplified antennas. Be sure to hook up the blue wire on the Lexus antenna adaptor to either the remote or power antenna wire on your aftermarket head unit ( my pioneer only had a remote wire ).



7. (optional) Wire up the PAC TR7 in the following way:
black to black (ground)
red to red (switch 12v)
green from TR7 to remote wire ( blue with white stripe )
white from TR7 to e-brake wire ( my pioneers wire was lime green )





8. (optional) Pull up on the silver ring around the shifter until it pops off. Also remove the rubber pad on the bottom of the cupholder area. Now, if you want a iPod connector in the cupholder area, you are going to have to drill into the plastic. After you do that, just run the wire through the hold, around the shifter and up behind the hvac controls to the back of the radio.









9. I had to modify the Scion tC dash kit I had. You should see where I had to cut on the image. After you have your dash kit set, line up the factory metal brackets to the radio, line up the dash kit, and screw them in.



10. Plug everything in and then test the unit before bolting it in. If everything checks out, bolt it back in using the 4 10mm bolts.

11. Put all the pieces of your dash back together and enjoy the fruits of your labor.





Hope that helps.