3WAVSND
Member
I figured I'd share my current SmartCap build on my 2025 Sierra 2500HD AT4.
The first project was building a roof rack using black TNutz aluminum extrusion mounted to the SmartCap rails. I wanted a very low-profile look and honestly didn't love many of the roof rack options available. The DIY TNutz setup allowed me to keep everything tight to the roof while still giving me the flexibility to customize bar spacing and mounting locations. (Not my idea, theres a number of videos and posts on this style rack)
One of the main reasons for building the rack was to support an OpenRoad 270+ awning. I use the truck for scuba diving, airsoft events, and truck camping, so having quick shade and weather protection was important.
After finishing the roof rack, I moved on to the power system.
I installed two Renogy 100W flexible solar panels on the roof and connected them to a Renogy 50A DC-DC charger with MPPT charging a Renogy 100Ah Smart Lithium battery.
I was able to fit the battery in the space beside my Decked system. I did have remove the factory tie down in order to slide the battery into position. I still need to come up with a low profile tie down solution that will allow me to secure the Decked system while still being able to remove the battery if it ever needs replaced.
The Renogy charger is mounted under the Decked Stash Box, and I installed a fused distribution block above it for future accessories and power circuits.
For charging from the truck, I ran 4 AWG cable from the starting battery to the charger. I also ran 1/0 AWG cable to the fused distribution block and left provisions for a second battery on the opposite side, which would be connected with additional 1/0 AWG cable if I decide to expand the system later.
The two Renogy 100W flexible panels are mounted using 30 lb magnets on each eyelet, and the wiring is routed through the SmartCap vent down to the charge controller.
Future plans include an ICECO fridge, a Cybertake S2 air conditioner, onboard air, and possibly a second lithium battery if I find I need additional capacity, probably will with the AC unit..
A few photos of the setup are attached. Happy to answer any questions.
The first project was building a roof rack using black TNutz aluminum extrusion mounted to the SmartCap rails. I wanted a very low-profile look and honestly didn't love many of the roof rack options available. The DIY TNutz setup allowed me to keep everything tight to the roof while still giving me the flexibility to customize bar spacing and mounting locations. (Not my idea, theres a number of videos and posts on this style rack)
One of the main reasons for building the rack was to support an OpenRoad 270+ awning. I use the truck for scuba diving, airsoft events, and truck camping, so having quick shade and weather protection was important.
After finishing the roof rack, I moved on to the power system.
I installed two Renogy 100W flexible solar panels on the roof and connected them to a Renogy 50A DC-DC charger with MPPT charging a Renogy 100Ah Smart Lithium battery.
I was able to fit the battery in the space beside my Decked system. I did have remove the factory tie down in order to slide the battery into position. I still need to come up with a low profile tie down solution that will allow me to secure the Decked system while still being able to remove the battery if it ever needs replaced.
The Renogy charger is mounted under the Decked Stash Box, and I installed a fused distribution block above it for future accessories and power circuits.
For charging from the truck, I ran 4 AWG cable from the starting battery to the charger. I also ran 1/0 AWG cable to the fused distribution block and left provisions for a second battery on the opposite side, which would be connected with additional 1/0 AWG cable if I decide to expand the system later.
The two Renogy 100W flexible panels are mounted using 30 lb magnets on each eyelet, and the wiring is routed through the SmartCap vent down to the charge controller.
Future plans include an ICECO fridge, a Cybertake S2 air conditioner, onboard air, and possibly a second lithium battery if I find I need additional capacity, probably will with the AC unit..
A few photos of the setup are attached. Happy to answer any questions.
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