[T3] Clock Fuse

William J catnine09 at dslextreme.com
Thu Oct 19 09:41:35 PDT 2017

 I found out years ago the clock in my 73 was not fused . Only because I was 
trying to adjust the clock via the small geared adjustment at the back and 
touched the plactic covered hot lead.

 Now I don't connect the clock at all .

 It's always bothered me that the IGN is not fused and that all the power 
from the battery to the regulator which in turn feeds the entire car is not 
protected .

 I was always going to install a fusable link at least between the battery 
and regulator as most other cars and trucks have or at the very least a 
large enough fuse sized to carry all the current the car requires .

 I never have since it's never caused an issue.

 Perhaps a battery diconnect switch added may be a simple solution . Not 
only to stop the clock from drawing down the battery , also if a regulator 
sticks or anything else that the driver comes out after work to find a dead 

 Problem is who want's to lift the rear seat each time . On a clock a small 
mini on/off switch .
----- Original Message ----- 
From: "Jim Adney" <jadney at vwtype3.org>
To: <type3 at vwtype3.org>
Sent: Thursday, October 19, 2017 8:48 AM
Subject: [T3] Clock Fuse

> 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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