[FC] Problem after installing High Volume Blower Motor

[Paul Steinberg]

The relay doesn't take much current to trigger it, and if you take a new 14 
gauge wire from the fuse block on the fused side of the circuit to the 
relay, it shouldn't cause an over load situation.  As to where you are 
getting the 12 volts to run the fan you haven't mentioned, and this also 
should be fused.  I would need a copy of the original wiring diagram that 
you used to properly assess the whole set up. Without being in front of the 
car and examining the connections, it is difficult to visualize the complete 
situation.   As for the ignition switch, they are designed to handle the 
load that GM designed into the car.  The only time that ignition switches 
fail is with extreme age, or they are destroyed by an owner trying to remove 
the key cylinder improperly.
Paul in CT

----- Original Message ----- 
From: "Andrew Sego" <andrew_sego at yahoo.com>
To: <corvanatics at corvair.org>
Sent: Thursday, October 27, 2011 12:01 PM
Subject: Re: [FC] Problem after installing High Volume Blower Motor


Paul,

Wouldn't running the power to the relay thru a key ignition source put the 
load (and heat) back on the ignition switch/fuse block/stock wiring. Seems 
like it would, and the relay would only protect the fan switch. Is this 
correct?

Rickie is correct: I meant the magnetic coil inside the relay. It appears 
that the ignition coil is somehow being supplied with voltage back thru the 
original wiring at the heater switch. I've been been informed that I can put 
"quenching" diode in the relay circuit to keep the voltage from kicking 
back. Until I can get that taken care of, I wonder what damage can be caused 
by shutting off the key without shutting off the fan? Can it damage my 
ignition switch? In the meantime, is it safe to assume that as long as the 
fan switch is off before the ignition key, that no harm will befall my 
ignition switch or any other component?

Thanks,
-Andrew

>But the coil he mentioned was the coil on the relay...not the ignition 
>coil.

>I don't know much about relays and whether or not they have coils...I am
>just taking his wording at face value.

>Rickie Williams

On Thu, Oct 27, 2011 at 10:17 AM, Paul Steinberg
<noahsarkinc at earthlink.net>wrote:

> It is where you took the 12 volt connection from. The power to the starter
> is always there, but the power to the coil is switched through the 
> ignition
> switch. I would use a switched and fused feed, such as the power feed to
> the radio to power the relay, so you don't have a feed back problem. Other
> than that, I don't see anything wrong with the installation. Presently you
> are back feeding the coil which will keep the engine running.
> Paul in CT
>To: <corvanatics at corvair.org>
> Sent: Thursday, October 27, 2011 10:34 AM
> Subject: [FC] Problem after installing High Volume Blower Motor
>
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