Blackhawk S 4 floor jack

I recently acquired an S 4 jack that is missing the switch for the headlight. I have no idea what it looks like or how it mounts to the handle. Any help would be appreciated.

This picture shows the light and the switch on the handle.

I am also an owner of an S-4 and have been in the process of restoring it. Mine has what I think is the complete switch assembly, but all of the wiring from the switch to the lamp and the lamp itself is missing.

Here is a picture of the switch assembly (at least what I have) all put together. It looks like it functioned as a simple momentary contact switch.



All of the same pieces layed out.



Lastly, here is a PDF of the exploded view of an S-4 that came with my jacks paperwork.

PDF of S-4 Exploded View

It is about a 10mb file. I have more documentation and can take more pictures if you need more info, but right now I am away from home for about a week.

More S-4 light sys. component pics:



Lamp and lens, switch assy. minus the spring.








The lens incorporates a magnifier.


An original harness assy. showing the battery side contact and phenolic insulator.


Original harness and a newly fabricated harness incorporating original solder contacts and insulators.


Battery side contact.




Lamp side contact.


Lamp side contact parts.




The L/H side of the jack handle is threaded for mounting of the switch assy. The handle is also hollow and is used as the battery compartment.


The hydraulic unit cover incorporates a housing for the lamp and lens.

that is a cherry lens. Where do I get a lens like that? Also how much for a replacement wiring harness? IS there suppose to be a spring in the battery portion of the handle? or just a spring behind the button possibly?

thanks