It took a while with a lot of planning but I'm fairly complete with my 200watt Solar system.
I mounted two (2) 100watt Renogy Solar (black frame) on the roof rack of the RTT. I had a short run to the controller so I used a 12AWG solar connector and wrapped with a 1/2" cable sleeve. I do not intend on adding more solar so the 12AWG will suffice.
looking for a clean flush installation, I used aluminum Z-clips to mount the solar with stainless hardware. The solar panels are approximately 1/4" above the roof rack rails. It was a goal to protect the edge of the solar from the "unforeseen" flying road debris. I use the balance of the roof rack for my surfboards and other items so it remains useful. the roof rack on the Roofnest RTT can support 100lbs; and in the open position 50lbs. Each solar panel weighs 14.1lbs plus misc. hardware so I'm about 30lbs.
Second Battery install
A little sandy from a recent beach trip. I need to get my air compressor for the sensitive parts...
a) C4 Fabrication Auxiliary Battery Tray. the tray comes uncoated from factory. I applied a bed-liner spray.
b) Duracell Ultra 80AH, AGM (SLAA 12-80C/FR). Weighs 50lbs This was the largest Amp-Hour I could fit on the tray.
c) Renogy Wanderer 30A PWM Charge Controller. I plan on upgrading the controller to a MPPT in the future.
d) Renogy Bluetooth Module RJ12. I can use an app on my phone to track battery temperature, watt production and battery life.
e) Renogy Battery Temperature meter. this plugs into the charge controller to meter the temp.
f) 1/2" thick PVC plastic sheet. I custom cut a platform to attach the breakers, controller, etc. The panel is secured underneath the battery tray cross member.
g) 120amp breaker providing power to the inverter in the back of the rig. For you eagle-eye experts, you will note the red to the inverter is not connected; and the black to the inverter is also missing. I was too lazy to take a current photo but I did complete the project and ran two (2) 4AWG 15' long cables from this battery to the inverter. A rubber plug in the firewall is conveniently located behind the battery so the install was super easy.
Connecting both Batteries
this was a lesson learned improvement from a recent trip to Colorado, I only had a 100watt panel and the second battery. I was consistently within 1.5 days of having no power so I connected both batteries as to have the ability to charge while I'm driving especially after sundown and added a second solar panel.
a) installed an Auxiliary Power fuse block bracket available on amazon. I was happy with the product. I provided a spacer at the bottom to raise the platform as it was interfering with my relay fuse box nearby.
b) connected both batteries via the Blue Sea ML-ACR. this device allows me to automatically and manually control how both batteries are connected and charge. now while I'm driving, both batteries receive charge. it is also my understanding that I can start the FJ with my second battery should my primary fail.
c) the 60amp breaker is unrelated to the solar build. this breaker provides power to my relay fuse box for all my accessories.
d) 250amp breaker from the main battery to the ML-ACR
Cabin Dual-Battery Switch
The blue sea ML-ACR comes with a switch allowing automatic and manual operation. I have been accused of being OCD, so the switch had to be a clean install. the switch emits a red light and i didn't want it among the other "non-red" switches on the center console. these reds and ambers don't play nice together....
Inverter and Fridge
In the rear of the FJ, i built a storage system that organizes my gear. after a few iterations, this layout works best for me. i will be rebuilding this winter with a few tweaks, drawers, and a slide-out platform for the fridge.
a) I have a 700watt inverter that is close to 12 years old. i will be upgrading soon to a Renogy.
b) ICECO VL-45 fridge. i've been using for awhile and love it.
c) making expresso coffee in the morning. by far the best use for the bumper!!
A project is never complete,
a) swap inverter and rebuild storage system.
b) add convenience USB charging ports in the rear. at night i typically charge flashlights, radios, etc while i'm asleep.
c) add information panel. i don't like being tethered to my phone when I'm enjoying nature. it would be nice to know the health of the system without looking at an app. any recommendations here are greatly appreciated.
d) perhaps a connector to the controller so i can park in the shade when available and use my folding solar, run a cable to the folding solar in the distant and have the best of both worlds.