Anyone know where the 3rd brake light wire is under the dash?

I want to add a 3rd brake light flasher to my crewmax. It be great if anyone knows where that +wire is under the dash.

I'm going do a write up once I figure it out.

 

Are you wanting to tie into the wiring under the hood for a closer location the relay and fuse?

 

Under the dash would be ideal. I will add a flasher board. Hope someone knows the location under the dash if it exists.

 

@Nor7 maybe?

 

Thanks @RowdyRon
If I can find where A51 wire is Under the dash that would be ideal.

 

@RowdyRon how do I figure out where the A51 junction is located. That is the key to this.

 

Can I Pull the 3rd brake lamp assembly out from outside? I remember when I replaced my bulb, the housing stayed and could only pull out the bulb. If I could pull out the housing I could install the module behind the housing.

 

This has been asked before.

No, has to be pulled form inside to replace the whole assembly, only the bulbs can be replaced outside.

I pulled these for a 2008 a while back.

 

Ok, sorry, just read the OP. The 3rd gen hasn't been published to the site I have access to yet. I can look it up for the 2nd gens if you'd like

 

Way to go Ron! Gotta give that seeing eye dog a special treat!

 

Wow excellent!!!! When I have some time I will sniff back there with my test light to confirm this.