Rookie electrical question
Assuming this is going to be a street caer with an alternator.
Here's the thing to understand.
There are two power sources, right?
But the one can only supply power at 12.8 Volts in the best of situations.
The other can supply power at 14 volts give or take a little.
So between the two possibilites, electricity always flows from the higher voltage source, as long as it has enough power and the resistance is about equal.
The ammeter is in line with the battery.
It only shows current flowing in or out of the battery.
View attachment 1715613174
After the battery gets recharged, the flow through that line is essentially zero.
View attachment 1715613175
How you design your trunk mounted battery system makes a big difference on determining where to tap into power for a headlight relay circuit.
In general, on a stock electrical system the best place (in terms of least resistance) to draw power for forward lights is at the alternator output.
Assuming this is going to be a street caer with an alternator.
Here's the thing to understand.
There are two power sources, right?
But the one can only supply power at 12.8 Volts in the best of situations.
The other can supply power at 14 volts give or take a little.
So between the two possibilites, electricity always flows from the higher voltage source, as long as it has enough power and the resistance is about equal.
The ammeter is in line with the battery.
It only shows current flowing in or out of the battery.
View attachment 1715613174
After the battery gets recharged, the flow through that line is essentially zero.
View attachment 1715613175
How you design your trunk mounted battery system makes a big difference on determining where to tap into power for a headlight relay circuit.
In general, on a stock electrical system the best place (in terms of least resistance) to draw power for forward lights is at the alternator output.
