With as many 12V electro-gremlin hunts as I've been on in boats, cars and bikes, I probably
should be better with electrics than I am, but diagnostically I still sort of grope around in the dark (pun intended). Yes, I still rely on an unseemly helping of intuition in running down those little buggers.
Sure, I've read enough in these Forums about several frankly
too common issues near the battery, such as poor grounding and wonky terminals to concur with other posters that a real good look around there is in order. However, seeing as how your front end took the brunt of your recent "wildlife encounter," my spidey sense is tingling that you might also want to have a long hard look at the wiring around that ignition switch up front--maybe test the continuity of the switch itself with the Ohmmeter. Something may have jarred itself loose.
The total darkness, and not just one system's circuit. is the clue.
If a multimeter's handy that's swell. You might also try lightly clamping down the horn button, turning on the ignition and just fussing around with the various connections. When you hear that toot, you've got the brute! Now, my 2005 "Iron Belly's" wiring is such that the headlamp will only function when the engine's running. But with ignition on the horn still sounds. Your Enfield may very well behave similarly. There's your hunt-n-peck onboard diagnostic tool right there.
Well, happy hunting...and here's a little karmic payback to Bambi just for you: