To find a switched hot lead to run Icon, we had to run the lead over to the other side of the engine bay (driver side), near the underhood fuse block. The wire we tapped into ended up being the one labeled "Engine Coils" on the underdash fuse panel. We followed it through the firewall, and picked it up between where it goes through the firewall, into the underhood fuse block. It took us longer to find this wire than we care to tell--that's the downfall of doing R&D on a vehicle. To stretch across the engine bay, we had to splice a wire to the end of Icon's feed wire so it would reach. We ran the new, longer wire in a piece of plastic loom, which we shielded so it wouldn't be noticed. Then, we spliced into the 12V source, inside the factory wire channel that covers the bundle of wires from the firewall to the underhood fuse box. The instructions that come with the kit for Dakota/Ram applications will be more detailed.