The relay coil uuuu has 5.1 V when keyswitch opens turning off, enough to not release. Engine stays running.
The relevant part of the wiring is:
Code: Select all
+12Va-------------------ALT----------------------GND
+12Vb-------------------/ \
+12Vc-----./.-----lamp-----\
\-----------------uuuu-----------GND
+12Vd-----._.---------------------Dist-----------GND
./. = keyswitch
All / and \ = connect to above line
lamp = 2 watt "ALT" bulb on dash.
uuuu = relay coil
._. = relay contacts
Dist = distributor
Is it a malfunction of the car alternator/internal regulator (plain GM 12SI) or miswiring ?
Miguel