I have this fear that I’m going to drive off with a panel open and have it hit something like a tree branch. So a couple months ago I made some rough brackets to hold some hood pin switches, which I wired up to an led in the cab. Now I can clearly see if a panel is open without having to walk around my truck, or try to find the right angle to see my panels in my side mirrors.
I used a few of these:
wired to one of these:
The brackets I made aren’t pretty, but they are out of the way and I don’t notice them much: