Hmm. Interesting. The middle one in your first picture is the style I have in my 91 Syncro (non-GL) front doors, I believe. And I would swear it was the same in my 86 syncro (GL). The round post holds a spring, as I recall. I've never taken out the front door lock cylinders on my 91 Westy (GL Westy), which has power locks.

On Jan 24, 2010, at 9:12 AM, BenT Syncro wrote:

> Good morning, everyone:
> cylinders. I know the one with the square ends are for the doors. I am not
> so sure about the other two (slider too, maybe?). I am speculating that the
> one with the smooth oval end is for the rear hatch whilst the two pronged
> deal is for the ignition. It just seems logical but one or more of you
> probably knows just by looking at them. Sorry for the low-res pics. I used
> my phone for quick photos.
>
> http://picasaweb.google.com/syncro/HowToPages?authkey=Gv1sRgCISKpO_365ncygE#5430302664270338002
>
>
> Just for the heck of it, I took a pic to show the difference between the
> hatch locks. The fancy looking one is for the ones with powerlocks. The
> plain Jane is the manual lock version. Since I haven't disassembled a rear
> hatch lock before, I am operating under the assumption that that lock is
> complete. My thanks to Bus Depot for posting pics on their website which I
> used to help ID the different locks.
>
> http://picasaweb.google.com/syncro/HowToPages?authkey=Gv1sRgCISKpO_365ncygE#5430303635698115538
>