Suspect Firewall connection block.
Just to be clear, flow is electrons moving. Voltage is potential energy.
For example, this shows current flow immediately after starting. The power source is the alternator. The ignition, alternator's rotor, and the battery are drawing power through the paths shown.
If the alternator is producing power at 14 Volts, then it is 14 Volts everywhere except where current flows through resistance.
With the engine off, power is coming from the battery if something is turned on. Otherwise there is voltage in everything connected to the battery, but no flow, so resistance has no effect on the voltage. Voltage in that case just shows items are connected.
Knowing the flow path and the approximate current, we can then diagnose using differences in voltage.
https://www.forabodiesonly.com/mopa...s-park-lights-flashers.557125/post-1974607928
https://www.forabodiesonly.com/mopar/threads/voltage-problem.541822/post-1974321021
Just to be clear, flow is electrons moving. Voltage is potential energy.
For example, this shows current flow immediately after starting. The power source is the alternator. The ignition, alternator's rotor, and the battery are drawing power through the paths shown.
If the alternator is producing power at 14 Volts, then it is 14 Volts everywhere except where current flows through resistance.
With the engine off, power is coming from the battery if something is turned on. Otherwise there is voltage in everything connected to the battery, but no flow, so resistance has no effect on the voltage. Voltage in that case just shows items are connected.
Knowing the flow path and the approximate current, we can then diagnose using differences in voltage.
https://www.forabodiesonly.com/mopa...s-park-lights-flashers.557125/post-1974607928
https://www.forabodiesonly.com/mopar/threads/voltage-problem.541822/post-1974321021