Attach a volt meter to the battery, put the probe on the negative lead to the negative on the battery, then, starting at battery positive, touch your red probe to the battery, then to the next connection down the line. if you do this, you will end up at the coils, under the tank. You should get 12.4 volts at rest if you're staring with a known good battery.
You're gonna have to grow patience. No other way.
If you truly hate electrical, send it to a mechanic. Or do it yourself at 1/8 th the cost.