Remote battery switch

[MarieK]

I have switches at the helm to isolate batteries instead of having to use the manual switches located in a locker near batteries. When I press the switch at the helm I can hear a solonoid click but I'm not getting the battery turning on, only way I can get the battery to turn on is to use the manual switch. Boat is 15 years old so I suspect the solonoid has failed, I just can't figure out what I need to replace. Perhaps someone could look at the attached photos and guide me toward the actual solonoids, are they built into the battery switch? Should i see anything move? I think I see very slight movement in the manual over ride but not sure if this should move electrically?

 

[simonfraser]

suspect the solenoid is under all those wires in the grey allu box
if so that'd be a 'fun' project sorting it out