None of these are for Suzukis (AFAIK aside from the KAM) but I've been looking into it lately so here's some other types of locker.
OX cable operated locker for Danas.

Maxidrive vacuum lockers for Land Rovers.


This shows the protruding part of the centre and cut down bearing adjuster.

The Vacuum unit on the housing.
KAM electric locker. Yes I know it was posted earlier but this shows you how it works. They do make these for Suzukis, a lot of work to fit though.



Jimny with one.
Tractech Electric locking LSD.

Jack McNamara. I've got some 4WDing magazines from the early 80s with ads for his lockers, Land Rover axles and "6 gear" centres.

Air locker. Toyota and Rover are done in this style.


Air locker for Dana and Salisbury.

Vacuum lockers.


Worlds simplest manual locker. Basically the cross shaft has a spline cut inside it and you wind the axle in to make it engage with those splines and lock the diff.

The chariot spike that you use to operate said simple locker. You turn the bolt on the end.

Thanks
Hayden