Penta MD22 ignition switch numbering

[jakobmagnusson]

Hi,
MD22 ignition switch:
Which number on the back of the switch (1-6 corresponds to which number on the diagram?
(I'm especially want to know the "S on the diagram which is used to turn off the engine/fuel pump solenoid, which has stopped working I suspect that the ignition switch is broken.
Colors of the wires does not match the diagram, so not helpful unfortunately..)

[DougR]

#1Red= # 30 power into switch
#2Red/yellow= #50 to starter motor relay
#3Orange= #19. to glow plug relay and ground relay
#4 empty= #15a
#5 violet= S to stop solenoid and ground relay
#6 red/blue= #15b power out to panel

There are two diodes shown on the schematic coming from key terminal S (#5), and these diodes feed the stop solenoid and the ground relay and prevent feedback when the glow relay is energized. Check that the wiring connected to the diodes is good and that the diodes themselves are good also.

[jakobmagnusson]

Originally Posted by DougR

#1Red= # 30 power into switch
#2Red/yellow= #50 to starter motor relay
#3Orange= #19. to glow plug relay and ground relay
#4 empty= #15a
#5 violet= S to stop solenoid and ground relay
#6 red/blue= #15b power out to panel

There are two diodes shown on the schematic coming from key terminal S (#5), and these diodes feed the stop solenoid and the ground relay and prevent feedback when the glow relay is energized. Check that the wiring connected to the diodes is good and that the diodes themselves are good also.

Thank you!
Very good advice!

[deblen]

https://nikimat.com/volvo_tmd_22_workshop_manual.pdf