gishowboy
Full Member
For those who have and will buy an Alpine IVA-W205(and any radio that has a parking brake and brake pedal wire) and don't feel like buying or waiting on a PAC TR-7 to come in the mail like me, here's what I did to make my own video bypass. Now this requires 2 small toggle switches or 1 small toggle switch and 1 momentary push button.
The parking brake has a +12v on the switch when it is up and 0v when it's pressed in. The brake pedal, I believe, has a negative input and has 0v when up and -12v when pressed in. If you connect the yellow/blue wire to a +12v(I connected to the red ACC wire) and the yellow/black wire to ground, both with a switch, you will get your video bypass IF you follow Alpines unlocking sequence. Also make sure that the wires coming from the radio are connected to the ON side of the switch and the supply wires are connected to the OFF side of the switch.
Once everything is connected properly, put the parking brake switch on the left and brake pedal switch on the right to simulate pedal positions. The sequence is start both switches on ON, then flip brake pedal OFF and parking brake OFF, then leave brake pedal OFF and flip parking brake ON, then flip brake pedal ON and flip parking brake OFF, now the video lockout has been turned off and you can reset the switches to ON for next time.
Now what this simulates is the driver pressing and holding the brake pedal, while pressing and releasing the parking brake, then releasing the brake pedal and pressing the parking brake again. Although this is an inexpensive alternative to the PAC TR-7, everytime the radio is turned off, you MUST go through this sequence again.
If anyone is curious, I installed 2 small toggle switches in the top of the pocket below the air vent to the right of the radio. If you decide to use a pushbutton, wiring will be the same, but you will have to experiment as to what the pushbutton connects to, I'm thinking the parking brake since the foot brake switch needs to be in the ON position when you're done.
The parking brake has a +12v on the switch when it is up and 0v when it's pressed in. The brake pedal, I believe, has a negative input and has 0v when up and -12v when pressed in. If you connect the yellow/blue wire to a +12v(I connected to the red ACC wire) and the yellow/black wire to ground, both with a switch, you will get your video bypass IF you follow Alpines unlocking sequence. Also make sure that the wires coming from the radio are connected to the ON side of the switch and the supply wires are connected to the OFF side of the switch.
Once everything is connected properly, put the parking brake switch on the left and brake pedal switch on the right to simulate pedal positions. The sequence is start both switches on ON, then flip brake pedal OFF and parking brake OFF, then leave brake pedal OFF and flip parking brake ON, then flip brake pedal ON and flip parking brake OFF, now the video lockout has been turned off and you can reset the switches to ON for next time.
Now what this simulates is the driver pressing and holding the brake pedal, while pressing and releasing the parking brake, then releasing the brake pedal and pressing the parking brake again. Although this is an inexpensive alternative to the PAC TR-7, everytime the radio is turned off, you MUST go through this sequence again.
If anyone is curious, I installed 2 small toggle switches in the top of the pocket below the air vent to the right of the radio. If you decide to use a pushbutton, wiring will be the same, but you will have to experiment as to what the pushbutton connects to, I'm thinking the parking brake since the foot brake switch needs to be in the ON position when you're done.
