Voltmeter Wiring Diagram Alternator. This is the wiring diagram for a typical alternator. Check your meter display.
Why would the ignition read differently on the first tests when it wasnt actually engaging the starter than it is now. See attached diagram for suggested connection of painless wiring to your system. When an alternator has its output disconnected whilst the engine is running the sudden stopping of current flow through the stator causes the magnetic field that was being produced by the generated.
When there is a two color code for a wire.
Beginning with the tachometer fig. The battery provides stored power for starting. Release key to run starter keeps running and voltmeter reads 9 8 then 7v constant. See attached diagram for suggested connection of painless wiring to your system.