[6pack] Ruining rheostats

[Bob]

Key question is does fuse blow with current lamps without the rheostat?
Regards,
Bob
----- Original Message ----- 
From: "Navarrette, Vance" <vance.navarrette at intel.com>
To: "Bob" <rpeglow at optonline.net>
Cc: <6pack at autox.team.net>
Sent: Thursday, May 08, 2008 8:30 AM
Subject: RE: [6pack] Ruining rheostats


> Bob:
> 
> Something on the red/white circuit is drawing too much current.
> This is why the fuse blows and why you burned up rheostats.
> Since a short to ground on the ground side of any lamp will not
> make it draw more current, you have a couple of possibilities:
> 
> 1. Lamps are too high a wattage, so collectively they draw too
> much current.
> 2. One or more lamps are shorted - removing the offending lamp
> will make the current drop dramatically
> 3. A short to ground on one of the red/white wires between the
> rheostat and the lamps.
> 
> A good place to start would be to replace any bulbs that are not
> working, or are very dim. Check the wattage of the existing lamps while
> you are at it. 
> 
> Vance
> 
> 
>     Vance Navarrette
>     Cogito Ergo Zoom
>     I think, therefore I go fast
> 
> -----Original Message-----
> From: 6pack-bounces+vance.navarrette=intel.com at autox.team.net
> [mailto:6pack-bounces+vance.navarrette=intel.com at autox.team.net] On
> Behalf Of Bob
> Sent: Thursday, May 08, 2008 11:20 AM
> To: John Mitchell; 6-Pack; triumphs at autox.team.net
> Subject: Re: [6pack] Ruining rheostats
> 
> Electrical diagram I have shows 8 dashboard lamps wired to (red wire)
> rheostat and wire (red/white) to fuse 12V.
> Will fuse blow if you connect red to red/white?
> Rheostat function is to vary current/voltage to lamps thereby vary light
> intensity.
> This should not by itself draw more current...blow fuse and burn
> rheostat.
> Seems more like where the wires belong on the rheostat itself would be
> the
> issue.
> Regards,
> Bob
> ----- Original Message ----- 
> From: "John Mitchell" <jmitch at snet.net>
> To: "6-Pack" <6pack at autox.team.net>; <triumphs at autox.team.net>
> Sent: Thursday, May 08, 2008 3:51 AM
> Subject: [6pack] Ruining rheostats
> 
> 
> >     I've gone thru 3 rheostats for the dash lights in the last year,
> so
> > I jumpered the wires last night.  It lasted several minutes before the
> > fuse blew.  What in the red to red/white circuit should I be looking
> for
> > as the culprit?  Thanks very much,  John Mitchell  76 TR6
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