I thought of that @Cougar, but then I remembered I have a lighter plug that has leads on it to keep the memory alive on some vehicles. I just used that to hook my meter to.
And @GeorgeSanJose , I can top your story.
Years ago I had built a really nice looking cap for the back of my truck. It was all made of wood and stained and varnished. Two side doors and the entire back door raised to give you a little shelter when working at the back of the truck. If I remember right the outside was covered with that 3/8 thick cedar that you line closets with.
The only reason I gave that one up, was that the next truck box was 3 inches wider that the old one.
I’m sure most of you know that I have shod horses for over 35 years and with that you have a forge in the back. Mine was a coal forge with a 12V blower and when you left one barn…if the forge was still smoldering…that was fine…you’d need it at the next place. As long as the blower was off the forge was cool enough to not harm anything.
This is a common practice with most Farriers that use a coal forge. You just put a little green coal on top and let it smolder. It takes too much time and effort to relight the coal each stop.
I had been traveling down the highway for 20 minutes and came to a stop where I needed to make a left turn. As I made the turn I got a whiff of smoke and thought “that’s just the forge”, then half way through the turn I thought, "that’s not coal…that’s pine!!!
I pulled over as soon as I could. I opened the back door and my forge was belching out flames 2 feet high and one roof support was burnt almost to the 1/4 inch layer that covered the outside of the roof. I had no extinguisher, but my quart water bottle was just enough to soak a towel and pat the burning embers on the roof support out.
I figured that my tool box that is carried to the horse, rolled and somehow turned the knob for the blower.
I thought later, that had I been keeping on the same road and not needed to make that turn…the entire cap could have been engulfed in flames before I noticed it. I’d be wondering why so many people are on this road that know me…they’re all waving!!!
I was lucky and it took little to repair, but I sure learned a lesson.
Ever since, I carry an extinguisher and there is a switch…like a brake light switch… that shuts off all power to the back end as soon as the cap’s rear door is closed.