I'm happy to report that a new switch from Ken @Van-Again did the trick.

Are they rebuildable or can I take it apart (ie break it) and try to see
how the mechanism failed?

Thanks to all those who offered suggestions.

-MB

On Tue, Aug 21, 2018 at 6:21 PM Mark Belanger <mbelanger@gmail.com> wrote:

> I've got a pretty clean '91 GL Camper with a Subaru conversion and on the
> way home from a camping trip outside of Shasta last year, I noticed what
> seemed to be the headlights getting slightly dimmer. When I got home, I
> walked around the car and noticed that my running lights were out. It was
> very late and I had work in the morning, so I put it off for another day.
>
> That day has finally come, so I've started trouble-shooting. Here is the
> current status of the patient:
>
> - Headlights work.
> - Running lights do not at either switch setting.
> - Dashboard lights also do not work.
> - The car stereo works.
> - Both fuses 7 & 8 are fine.
> - Dashboard powered from aux battery (currently at 2.9V!).
>
> Aside from the low battery, I'm suspecting this is an issue with the
> headlight switch. Any diagnostics I can do with a voltmeter, as I
> understand those M-pin switches are hard to come by and don't want to spend
> a pile on something I don't need.
>
>
> Thanks mucho,
> MB
> --
> ________________________________________________________________________
> Mark Belanger - mbelanger@gmail.com
>

--
________________________________________________________________________
Mark Belanger - mbelanger@gmail.com