Where can I find a switched power connection?

I installed a nice LED light bar, used a relay, but for the life of me cannot find a switched 12 volt power connection for the switch side of the relay. Anyone have any guidance?

 

hows the bar powered? i tapped a 12v accessory and spliced a wire in and it works perfectly for my two duallys

 

The bar is powered directly from the battery on the light side of the relay with an inline fuse...I need some easily accessed power for the switch side. Not too excited about digging in under the dash, it is a jungle in there, and nothing is as simple as power and ground.

 

You want switched power from inside the cab, yes?

Just use an add-a-circuit fuse tap to the fusebox; I believe all the interior fuses are switched acc power. I have an add-a-circuit powering my CB and map light. The relay trigger would draw milliamps so there's no concerns with excessive draw on the wiring.

Even though we use those stupid super mini ATO fuses the regular mini ATO fuse add-a-circuits work, they are just a bit longer.