The measurements changed because the test conditions changed. When all 4
injector connectors are unplugged you should only ever see 12 volts on
one side of each pair of pins. When one or more injector is still
plugged into the harness the voltage feeds through the injector(s) to
the ground side and thus when you measure at a disconnected one you will
see 12 volts on both pins. That is because the still connected one is
providing a path for the voltage to get to the ground side common wire.
Unplug all 4 injectors first and all 4 should then measure the same.

Mark

Steve Cotsford wrote:
> When at first I looked for a B+, I found one on both connections of the injector plugs of the l/h bank.      Then I could only find one on each plug of the other injector bank.  Then when I went back to the first bank, I could only find one, not 2 as I had originally thought.   I'm not sure what I did there.