I'm putting in an aftermarket NAV unit in my 2007 Tundra and need to get a speedometer wire. I've called tech support through the company that makes my radio and they say its a green with orange trace behind the glove box... Strike One! I had a buddy that owns a stereo shop look it up he said its a white wire on the radio harness. Strike Two! Any help?

I'm putting in an aftermarket NAV unit in my 2007 Tundra and need to get a speedometer wire. I've called tech support through the company that makes my radio and they say its a green with orange trace behind the glove box... Strike One! I had a buddy that owns a stereo shop look it up he said its a white wire on the radio harness. Strike Two! Any help?
That wire changes colors 5 times from where it starts.
Where do you want to access it?
Behind the radio?
behind the combination meter?
under the hood?
Let me know and Ill trace it down to specific location and connector and color.

I'll access it anywhere. Preferably right behind the radio would be the easiest. The nav piece is in the factory location so anywhere close.