Second Gen reverse signal wire

What color is the signal wire for reverse? I'm talking about the one from the shifter to the reverse indicator in the dash, not the the wire the powers the reverse lights.

I'm going to be wiring the reverse camera video into an aftermarket HU and want to use that to turn on the screen.

Thanks.

 

What year is the truck?

 

2011 Pre Runner.

 

Looks like it's red, I attached the wiring diagram for the reverse lights.

 

Thanks!

 

It’s a thick red/white wire down in the driver kick panel

 

Perfect! Thanks.