[TR] Lucas Heater Switch

[TERRY SMITH]

You might try Mike Bonaducci in Bradford VT for a used one, if you like.  (802) 439 5815.  NFI and all that.  There are other places that sell used parts as well. 


Good luck,

Terry

> On November 26, 2017 at 3:15 PM David Friedlander <forzion7 at gmail.com> wrote:
> 
>     TeriAnn ~
> 
> 
>         > >         "According to my Lucas1961 catalogue 78362D is the optional heater 
> >         switch for the Triumph TR3. takes knob 54332086."
> > 
> > 
> >     >     I don't find a 78362D mentioned anywhere on the web.... at least not in 
>     the way of anything currently for sale....
> 
> 
>         > >         "
> >         78405 is not a listed number for 1961
> >         "
> > 
> > 
> >     >     FWIW, these Lucas heater switches are available on eBay
>     .
> 
>     But, as Randall said in his email of a day or two ago:
> 
>         > > 
> >         Stock TR3A is either 78262 or 78362 for (probably) post-60k.  They take
> >         different knobs.  78362 is 2.5 ohms.
> > 
> >         78384 is 5 ohms (per Lucas 400e master catalog),
> >         78405 is 15 ohms according to
> >         https://www.autoelectricsupplies.co.uk/product/815/category/153 https://www.autoelectricsupplies.co.uk/product/815/category/153
> > 
> >     > 
>     Not really sure what to do for a new heater switch! What do people do if
>      their present heater switch fails for some reason? I can't see spending 
>     $140 for it from Moss 
>     (
>     https://mossmotors.com/switch-rheostat-replacement?assoc=41693
>     ). 
> 
>     Maybe Moss will tell me what the manufacturer's part number is for the 
>     635-180 they sell....
> 
>     Dave
> 
> 
>     On Sat, Nov 25, 2017 at 11:40 PM, TeriAnn J. Wakeman <tjwakeman at gmail.com mailto:tjwakeman at gmail.com > wrote:
> 
>         > >         According to my Lucas1961 catalogue 78362D is the optional heater witch for the Triumph TR3. takes knob 54332086
> > 
> >         78384 is for a Morris Minor.  It takes knob 54331278
> >         78405 is not a listed number for 1961.
> > 
> >         TeriAnn
> > 
> > 
> >         On 11/25/17 3:59 PM, Randall wrote:
> > 
> >             > > > 
> > >                 > > > > 
> > > >                 So, I went to eBay and found heater rheostat switches for the Triumpoh as
> > > >                 either Lucas
> > > >                 P/N 78384 or 78405. Does anyone know: Are these essentially the same item?
> > > >                 Will either
> > > >                 one work on a TR3 heater?
> > > > 
> > > >             > > >             As usual, depends on your definition of "work". Stock TR3A is either 78262 or 78362 for (probably) post-60k. They take different knobs. 78362 is 2.5 ohms. 78384 is 5 ohms (per Lucas 400e master catalog), 78405 is 15 ohms according to https://www.autoelectricsupplies.co.uk/product/815/category/153 https://www.autoelectricsupplies.co.uk/product/815/category/153
> > > 
> > >             The higher resistance means you'll get less airflow (likely none at all for
> > >             the 15 ohm version) for any setting other than 'max'.  But either of them
> > >             should give you "high" and "off", which are the only two setting I ever
> > >             found to be useful.
> > > 
> > >             Neither appears to accept either of the stock TR3 knobs.
> > > 
> > >             (I didn't check if they will fit in the same hole.)
> > > 
> > >             -- Randall 
> > > 
> > > 
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> > > 
> > >         > > 
> > 
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