B3.9 and B5.9 Series Engines
Section 13 - Electrical Equipment - Group 13
Solenoid Control Circuit Voltage Drop on Delco Start-
Disconnect the battery.
Remove all cables and connections from the battery ter-
minal of the cranking motor.
Clamp all cables and connections together (a 1/2-inch bolt
and nut works for clamping connections). Wrap a heavy
cloth around the battery terminal of the cranking motor to
be certain it does not touch any metal.
Connect the battery.
Connect a digital multimeter, Part No. 3377161, between
battery positive (+) and the "S" terminal (the multimeter
should show battery open circuit voltage, about 12.5 to 12.6