Could you blow yourself up this way?

[davepl]

[Please move this to electrical if it's too specific, but it's kind of a general safety question, so putting here for now]

It used to worry me that the fuel tank sender operated on 12V, but then I eventually figured out that there's a ton of resistance in the circuit, so there's pretty much no way it could ever arc or spark inside the fuel tank.

But as I was about to start troubleshooting a gauge issue with my power probe, I had to wonder:

What if I used it to inject a FULL 12V into the sender wire? Couldn't that spark/arc internally at the fuel tank sender?

If it were submerged, you'd still likely be OK, but if the fuel level was low enough that the sender mechanism was above the fuel line, it'd be sitting there in vapor, and... boom?

I'll definitely put it on my "don't try it" list, but I'm surprised I've never heard of anyone accidentally hooked it up wrong or otherwise sending a full non-resistance 12V into it by mistake.

Or maybe it happens all the time and it's still safe for some reason I haven't thought of?

Dave