[Patrikas.1]

Hello, maybe someone know how to make Android headunit be able to turn on without ignition?

 

[Funky Diver]

How have you connected it to the main loom?

 

[Patrikas.1]

How have you connected it to the main loom?

By wires and canbus that was included with headunit and there was 2 wires from headunit (I think its AMP and ANT) which wasin't connected to anything, but I found 2 wires from car which was not connected to anything (other owner did that) near that place so I connected them to AMP and ANT wires because there was no sound and that fixed it. Car has Bose audio system.

 

[Redd]

Put in your key, foot off the brake pedal, press the start button.

 

[Patrikas.1]

Put in your key, foot off the brake pedal, press the start button.

But then it turns off

 

[Old Engineer]

This is probably the old Fiat/Alfa problem of the two power feeds (ignition live/permanent live) being reversed.

 

[Patrikas.1]

With original stereo I was able to turn it on without ignition

 

[Jpe61]

You probably need to fiddle with the wiring. The HU is not connected to a permanently hot wire.

 

[Teflon Shoulder]

I have the same (looking) stereo and mine works as soon as I put the key in the dash. My 159 is pre-facelift.

 

[Old Engineer]

This ...

(6) New to alfa | Alfa Romeo Forum (alfaowner.com)

 

[MadMotoUK]

A lot of newer vehicles won't power the stereo unless the key is in the MAR position, or, in the case of key cards, the ignition has been switched on by pressing the start button without depressing the brake or clutch.

If you're not getting this, you likely need to swap the power wires around. I'm not 100% sure of OEM colours on Alfa looms, I'm sure someone can confirm, but aftermarket colours are normally red for ignition switched 12v and orange for permanent 12v low current (for memory functions). I'm guessing your Android unit power connections are the reverse of the old head unit.

 

[Funky Diver]

aftermarket colours are normally red for ignition switched 12v and orange for permanent 12v low current (for memory functions). I'm guessing your Android unit power connections are the reverse of the old head unit.

and Yellow for permanent 12V

 

[Old Engineer]

I have the same (looking) stereo and mine works as soon as I put the key in the dash. My 159 is pre-facelift.

It's probable that you have a better DIN wiring loom.