A review of the possible circuits for providing power to the roof top tent...
With the High Load power option, the overhead panel looks like this:
The photo above and the next two tables come from Rok_Dr’s Exceedingly Unofficial Owner’s Manual Supplement:
UPDATED 25 September 2025. (v9). New Link Follows: Refer to post #192 in this thread for changes. https://drive.google.com/file/d/1tHF4zR33OClUZ5_meLRXotzbrY_vd5sv/view?usp=sharing UPDATED 5 August 2025. (v8). New Link Follows: Refer to post #183 in this thread for changes. UPDATED 8 February...
www.theineosforum.com
The standard switches/circuits:
None of those are on the roof. Some of the High Load switches are:
The power connections for EXT2 is on the front right side of the roof, and it's often used for lights that might be installed on a roof rack. My rack has lights mounted to it and that's the circuit I used for them.
There are three power connections for EXT3 on the roof - front left, right and left rear, all three are on the same circuit and switch.
One of those connections could be used for power in the RTT. Another good use of those connections would be for campsite lights. But since all three of those connections are on the same circuit, how do you provide power to the tent without also having the campsite lights on? Seems like another circuit would be a good idea if you wanted to do both campsite lights and power in the RTT and have independent control of each.
Also, all of the switches in both the standard and High Load panels are switched - meaning that when you shut off the ignition, power to those circuits is cut (except for EXT4, the 500a circuit intended for a winch). Typically you wouldn't have the ignition on while sitting around the campsite in the evening with the campsite lights on.
The Grenadier's solution to that is the PWR switch, also on the overhead panel. With the ignition off and that switch turned on, all internal and external switched circuits from the above tables, except EXT4 (500a winch power) are turned on. In addition, the optional USB ports on the rear of the center console get turned on and the optional 12v socket in the cargo area gets turned on. So if you use one of the circuits that requires that the PWR switch be turned on when the ignition is off, you would need to make sure that all of the other circuits that get turned on when the PWR switch is on aren't drawing unnecessary current.
So here are some options for power in the RTT:
1. Run a 10' USB cable from a USB outlet in the Grenadier like I did with the Jeep. To power a USB outlet in the Grenadier without the ignition being on, the PWR switch would have to be turned on and I'd need to make sure other circuits controlled by the PWR switch aren't drawing unnecessary current.
2. Use EXT3. Probably you wouldn't also have campsite lights on this circuit because it might be difficult to turn them off while the RTT power was on. Same comments about the PWR switch.
3. USe INT2. This connection is in the passenger side footwell and I have no other current plans for it, so I could run wires from there up to one of the roof connection points. But again, same comments about the PWR switch.
4. Run a second circuit up to one of the connection points on the roof. I've already added a connection (an input) for the rooftop solar panel, so I could do something similar for RTT power. Since the solar controller has an accessory output that is unswitched, taking the power from there would be perfect - no worries about any of the other Grenadier factory circuits being on at the same time and drawing unnecessary current. The connection I added for solar input:
I'm camping in Death Valley in a few weeks so for that trip I'll probably use option 1, but I'll consider the other options while falling asleep in the RTT.