Does the illumination wire on the harness throw a ground or 12v when I turn the headlights on?

 

Get a Digital Multi-meter and test it...

 

if someone on the forum knew i wouldn't have to....

edit: If no answer comes by the end of the week I'll open it up and check for myself.

 

UUHHHH OK... So if no one knows, go find out!... It's not that hard...

 

Take apart your dash and check for me then

edit: oops, just checked the sticky. I will assume its a 12V for now.

https://my350z.com/forum/2112032-post1.html

 

If I remember correctly from my install, it is a +12. But while you are installing your new headunit you can just confirm it to make sure. Even if someone here said the knew 100% that it was +12v, I would still double check for myself, as should everyone else.

 

according to the '03 service manual the base radio has an illumination input (red/yellow, pin 7) and a lighting switch input (red/blue, pin 8) that both show 12vdc when the lights are on and both show near ground when the lights are off.

As StreetOC said make sure you verify with a meter before making any connections.

 

Thanks a lot guys! Appreciate it. I'll double check to make sure when I do work on it.