It does look a lot like the diff lock switch that Van Cafe sells
https://www.vancafe.com/016941521-p/016941521.htm

On Mon, Oct 22, 2018 at 3:25 PM Dennis Haynes <d23haynes57@hotmail.com>
wrote:

> Looks the same as used on the diff locks. There should be a spacer shim
> under it. I can look up the part later when I get home.
>
>
>
> Dennis
>
>
>
> Sent from my Windows 10 device
>
>
> ------------------------------
> *From:* Vanagon Mailing List <vanagon@gerry.vanagon.com> on behalf of
> Mark McCulley <markmcculley@GMAIL.COM>
> *Sent:* Monday, October 22, 2018 6:21:10 PM
> *To:* vanagon@GERRY.VANAGON.COM
> *Subject:* syncro decoupler switch replacement
>
> Hi all,
>
> I'm looking for a replacement for the switch in the driveshaft decoupler.
> This is the switch that is wired to a dash light to indicate whether
> driveshaft is engaged or not.
>
> Here's a photo:
> https://nam03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fphotos.app.goo.gl%2FT8HATrFXCpb3ZTDY7&amp;data=02%7C01%7C%7Ce78894e7dac349581c0008d6386cccd2%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636758437270984869&amp;sdata=27UhV0Fg%2FWXKdvAvjCNf5BRvXVkOYjfqJUZVcNzfKXQ%3D&amp;reserved=0
>
> Any ideas on part # and source for a new one?
>
> Thanks,
> Mark
>