Jerry Causey wrote:
<snip>
... As I
> recall, the fan motors are all pretty much the same. There's a little
> thing (a techno term I frequently use) inside the fan housing which
> determines which speed the motor turns. It could be a resistor. You
> could probably get a similar result from your present fan motor by
> using a reostat switch....
>
> Regards,
> Jerry Causey
>
> > Also, I would like to replace my original single speed heater with a
> > late model MG 2 speed heater. Will this simply bolt in? What year
> > did BL start using the 2 speed heater? I think it must have been
> > around 1975 or so. I checked on the price for a three position
> > switch (off, low, high) that is the early ('62-'66) headlight
> > switch. It costs about $30.00, from our local Moss distributor,
> > which is a little too pricey for me! Anyone know of a less
> > expensive vendor for the same switch?
> >
> > Thanks in advance for your help!
> >
> > Cheers from rainy (more to come) California!
> > Jim
Jim, Jerry, et al:
I don't know what year they started the 2-speed heater motor, but it
wasn't 75. I have a 75 and it doesn't. I DO know that: you need a
2-speed resistor; it doesn't go in the dash it goes in the fan motor; it
doesn't fit in the early fan housing; and if you convert to 2-speed you
need not only a switch but also the fan itself and a jumper wire. The
early (up to 75 and I'd guess up to 77 or so) fans had two wires coming
off the back, the later ones had three. I know because I've looked into
this ... I've got the 2-speed switch in my 75 but it's obviously not the
right one since I have the one speed motor. :)
Corey
75 MGB 'Rags'
RD#373750
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