Hi guys,
A possible cause can be corroded solderjoints at the bullet connectors.
When I have time I'll check with mine.
Interesting issue though, because it indicates the state of the total
electrical system.
I wish all listers a good octagonal 1999!
Cheers,
Hans
'71 BGT
NBRG
> -----Original Message-----
> From: Rene van Maanen [SMTP:renevm@support.neth.hp.com]
> Sent: Thursday, December 31, 1998 09:12
> To: Rick Morrison
> Cc: mgs@autox.team.net
> Subject: Re: Heater blower speed
>
> Hi Rick.
>
> It was my story on Skye's idea. After I posted the 'fix' I got the tip to
> check the internals of the heater switch.
> I did. And guess what? It was etremely corroded. After I cleaned it, I
> also
> connected the direct plus to the motor, with the switch in the on
> position.
> There was hardly any difference noticable.
>
> The wires that are combined with the motor are:
> The general plus behind the facia. I guess there is hardly any loss of
> power
> there, since it is all over.
> The ground of the motor. I don't know about that one.
> The wire between the switch and the motor, and the switch. There are no
> jumpers in between, so there can hardly be any power loss there.
>
> The current is very high, so the chances of loss a huge. I like what you
> did,
> but I'd ratcher stick to originality.
>
> Greetings, offcourse no offence.
>
> Rene
>
> Rick Morrison wrote:
>
> > FWIW Department:
> >
> > Not to long back, a lister posed the question about installing a relay
> in
> > the heater blower circuit, and it's effect on the speed of the blower
> > motor. (sorry, can't remember exactly who originated the thread)
> > I haven't been exactly happy with the heater blower on my GT for a long
> > time, so I thought I'd give it a try. Used a relay from a aux. driving
> > light kit and installed it, mounted next to the heater box, on the
> > firewall.
> > There is a marked increase in the speed of the motor with the relay in
> > place. To double check, I pulled the fan switch wire from the relay and
> > jumpered to the motor + wire. The motor speed audibly decreased, but
> > immediatly raised again when the relay was re-connected.
> > Not being an electrical genius, I can only surmise that the skimpy
> > wiring to and from the fan switch and to the motor simply isn't
> > suffecient to carry the current. With the line power circuit through the
> > relay now being 10 ga. wire, it seems to work much better. As a
> side-bar,
> > I've also noticed the voltage drop, as registered by the on-board
> voltage
> > meter is much less than before. Pre-relay, when I turned on the blower,
> > the voltmeter would drop by 1 1/2 - 2 volts. Now it's somewhere in the
> > range of 1/2 v.
> > Am I correct in my assumptions? Or is there something else that I
> might
> > be missing here.
> >
> > Rick Morrison
> > 72 MGBGT
> > 74 Midget
>
> --
> Rene and Marion van Maanen
> Netherlands Europe
>
> SOHC/4 sohc4@dorje.com Honda CB350F ['74] member #252
> Honda CB750K2 ['75]
> http://members.tripod.com/renevm/cb750k2/index.html
> MG list mgs@autox.team.net MGB GT ['68]
> http://members.tripod.com/renevm/mg/index.html ring #119
>
|