[T3] Clock Fuse

John L. Morgan IV emailjohnmorgan at gmail.com
Thu Oct 19 09:08:00 PDT 2017

off list.

On Thu, Oct 19, 2017 at 11:48 AM, Jim Adney <jadney at vwtype3.org> wrote:

> For some time, I've been bothered by the fact that my car batteries run
> down
> if I don't drive the car for awhile. While a certain amount of
> self-discharge is
> normal in lead/acid batteries, my cars seem to run down faster than I think
> they should. Finally, I realized that the clock might have something to do
> with
> this, since they continue to run all the time.
> The obvious solution, since the clocks don't keep good time anyway, would
> be to simply remove the clock fuse when the car's not going to be used for
> a
> long time. But, to my surprise, the clock is not listed as being served by
> of the 12 fuses. A look thru various wiring diagrams confirmed that the
> clock
> IS NOT FUSED! Huh? Really?
> Looking at wiring diagrams from '66 to '73, I can see that the clock power
> came via slightly different paths, but it never comes thru a fuse. this may
> explain why the female power connector to the back of the clock has a
> plastic insulator on it, but why do it this way? I've never had a problem
> where
> a fuse there would have saved something, but this seems odd and out of
> character. Shouldn't everything be fused? I note, however, that the
> ignition
> and starter circuits are not fused.
> Now the early, thump-wound clocks, up thru '70 have an internal fuse, but I
> don't think there's anything comparable in the '71-3 clocks.
> I'd like to reroute my clock power thru a fuse so I can easily disable the
> clock
> when the car is in storage. I put a trickle charger on that car, but I can
> see
> now that the trickle charger can barely keep up with the clock, so it
> would be
> better if the clock was not connected while in storage.
> Any thoughts on this?
> --
> *******************************
> Jim Adney, jadney at vwtype3.org
> Madison, Wisconsin, USA
> *******************************
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