Intermittent no electrical power

So I have a plow on my vehicle, I was plowing a driveway when I hit a small dirt clod or something that jarred the vehicle a very small amount. When this happened my vehicle stalled, lights went out heater all of it. Now what I actually have for a jeep is a bit of a Franken vehicle. 1993 vehicle yj body sitting on a 1985 cj7 with the 4.2. I have a 3 speed automatic transmission. So since then I have gotten power back and lost it several times. So this being a Franken vehicle nothing is original. The fuse box is after market all of 10-15 fuses. The wiring under the "dash" I have no actual dash everything is steel and fiberglass. My heater, wipers, and back up lights are on a toggle switch. The headlight switch looks original the button on the floor board for my lights just turns the lights off. My turn signal is rigged on there it is not part of the steering column. So all this being said this is my daily driver believe it or not. I just bought it like a month ago. There are so many new parts it is insane but I am left with electrical issues and all of maybe 30 wires between inside and out and I think that is a high estimation. All of my gauges or aftermarket as well except the speedometer. So back to the issue at hand. This issue is not cut and dry it will no longer start or turn any power on. This is a frequent but intermittent issue. I can't drive it because It sometimes takes seconds to crap out or a couple miles. I have checked the grounds I have tested them, the battery terminals are new, most of the wires are new. The battery and alternator are new. The voltage meter is not hooked to the alternator via the excite wire but directly to the battery. So even when I have no power the volt meter reads 12 volts and yes it functions. I do not have fusible links that I can see. The fuse box is aftermarket and new. The fuses are new. This jeep was just pure hated a month ago and this issue is hurting my head. I need help. To avoid hours of diagnostics tomorrow I am likely just going to rewire it. It seems that there have been others on this forum with similar issues but the fixes do not seem to solve my problem.