I've had bonnet solar on several vehicles now; and actually ordered the Lensun kit several months ago, only to find out that they in fact
didn't have a kit for the Grenadier at that time, despite what their website said (they needed all the bonnet measurements). According to my last email from them (middle of June), they do have the appropriate measurements, and were expecting the panels to be available in July. Not sure if that is still the case or not.
My previous experience with bonnet mounted solar is using panels from
Cascadia 4x4, with good results. We have their panels on our Sprinter (for about 2 years), and had them on my better half's Tacoma for about a year until it was sold. The Tacoma's panel appeared to be delaminating in a few places (maybe 5-8mm areas), but worked perfectly fine.
@chrsbe yes they are mounted directly to the hood surface (technically they suggest a layer of vinyl to protect the paint from any flex in the panel); and while I'm sure there is some negative effect from constant heat, the panels aren't intended to be super high producers, more so just a little bonus bump.
If you have room to put a panel elsewhere, I would prioritize that first as your price-per-watt will be vastly cheaper; but if it is all the space you have for solar, something is better than nothing.
One thing to caution is their panel voltage is a bit too low if you plan on using a Victron solar charge controller.
