I am looking for power underneath the dash to tap into. Dosent matter if battery power, key power. All i want to do is wire in the plug for my satellite radio. My truck is an 09 f550 v10. Thanks in advance.

 

Just use a wire tap and put it in the switched +12v for the radio, that's what I did.

 

I just found this photo I had posted elsewhere:


If you look toward the lower left corner of that photo, you can see a wire that is light blue with a pink trace on it. That wire is also a switched +12v source. I have it powering my aftermarket gauges. It's normally tucked neatly away in a small bundle of wires with a piece of tape wrapped around them labeled "Customer Access Wiring" or something to that effect. There should be a red, white, and black solid colored wires along with the blue/pink one.
The wire I'm referring to is just to the left of the red circle in this photo.

 

should have one keyed customer access fuse in the underdash fuse box.

 

Yeah that would be great they should have a panel with ignition, bat and light power access in that panel. Also allow anyone with a little sence to be able to hook it up.Thanks superduty4x4 for the picture, i will go try that out today..
They made a good thing with the 4 upfitter switches and the pass through wires. Those are both important for the aftermarket, now they need a little more access.