Intermittent wipers and cruise- void warranty??

I'm looking at adding intermittent wiper switch and cruise control to my 2013 tacoma reg cab 4x4. I've seen all the thread on here on how to do both that's not my question. Just wondered if anyone knew if I add these will it void my remaining factory warranty? And how do I know if I'm prewired?? And does anyone know what it cost average to have the dealership do this??

 

No, almost nothing voids a warranty.

It is, every vehicle has the same wiring regardless of options installed.

Too much. Its a 10 minute job.

 

The wiper stalk is easy the cruise control may be a little more challenging.
My 2010 doesn't have the wires from the connector to the ECM or the wire for the cruise light indictor, yours may have them?

 

Not necessarily. I had cruise control installed on my '13 AC and found out that there was no wiring harness. Had to make a harness to connect everything.

 

Well my friend is a ex toyota mechanic he said I need a different clock spring/ spiral cable. Anyone else have this problem? How did you fix it or make it work??