I just ordered a F90BT and I was reading the installation manual. The Orange/White wire indicates it should go to the lighting switch terminal.

In my 2003 Corolla there are two lighting related wires

Radio Illumination Wire=Green

Stereo Dimmer Wire=White/Black

Since both wires are have some light functions which one of the 2 Corolla wires should I connect the Orange/White wire to ?

Thanks

Stereo Dimmer Wire=White/Black

That's the closer of the 2, Orange/White is also usually referred to in standard aftermarket harnesses as "dimmer"

The orange wire is flagged "illumination"

I'd use dimmer

Agreed with Dianebrat, but don't button everything up until you test it first, since we don't know 100%.

i am not sure about your car but my "illumination" wire provides the +12v when the lights are turned on. this signal will let the avic know that you turned the headlights on and will dim the display.

the "dimmer" wire runs through the resistor to ground that you use to dim the dash illumination of the whole car (and stock radio).

IMHO, you should use the illumination wire. thats what i did and it works great.

I have two interior lights system wires ones negative and ones positive. Which one does mine connect to?

I have two interior lights system wires ones negative and ones positive. Which one does mine connect to?

Positive

Thank you

What I show for the Toyota

12v = blue/white

ground = brown

ign = gray

illumination =green

power antenna =black

LF speaker =pink +/purple-

RF = lt green+/blue-

LR = black+/yellow-

RR= red+/white-

I dont see much of a difference from connecting the orange/white wire to power what is it supposed to do?

I ordered the 700BT but do not want it to dim or automatically change to night mode. Can I just turn night mode on manually?

I turn my lights on even during the day for safety. So obviously I don't want to dim it during the daytime.

Don't connect the illumination lead.

or set equal settings for lights on and off