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Re: [6pack] DPDT on-off-on rocker switch for electric fan conversion

To: "'Foster, Stan'" <stan.foster@hp.com>, "'Triumph'" <6pack@autox.team.net>
Subject: Re: [6pack] DPDT on-off-on rocker switch for electric fan conversion
From: "Bob Danielson" <75TR6@tr6.danielsonfamily.org>
Date: Mon, 12 May 2008 15:01:09 -0400
Stan,
I did the DPDT fan switch but used a toggle that's mounted under the dash
with two other switches (http://tinyurl.com/4vvs28).  Seeing as it's left in
the auto mode 99.9% of the time, you really don't need to see it. That's
assuming that the cooling system is doing it job 99.9% of the time ;-)I also
wired it so that the dash EGR light comes on when the fan is turning. 


Bob Danielson
1975 TR6 CF38503U
Running w/ Throttle Body Injection
Toyota 5 Speed & Nissan LSD
http://tr6.danielsonfamily.org 


-----Original Message-----
From: 6pack-bounces+75tr6=tr6.danielsonfamily.org@autox.team.net
[mailto:6pack-bounces+75tr6=tr6.danielsonfamily.org@autox.team.net] On
Behalf Of Foster, Stan
Sent: Monday, May 12, 2008 2:00 PM
To: 6pack@autox.team.net
Subject: [6pack] DPDT on-off-on rocker switch for electric fan conversion

I'm converting to an electric fan and the design I like the best is the one
with the option to switch between on, off and auto and this requires a DPDT
switch that has an on-off-on mode. An illuminating switch would be icing on
the cake. Since the switch is only powering a relay it can be small,
although the 6 terminals on the back will constrain how small it can be.

I have searched the web, visited Radio Shack etc and failed to come up with
anything suitable. There are dpdt on-off-on rocker switches but they are all
larger than what I want and designed for 110 or 240v appliances etc.

I wonder if anyone that has gone down this path and has come up with
anything suitable ?

Plan B, there are a ton of spst illuminated rocker switches out there, I'm
using one for my fog lamps, I wonder if there is a way to re-do the fan
circuit to use one of those, perhaps combining the Auto and Off modes by
powering the relay through the ignition (ignition on - Auto, ignition off -
Off) and using the switch to force the fan on (also only when the ignition
is on so that I don't create an ignition bypass switch..). I'm a software
guy so I'm a  bit out of my depth here..

Stan
6pack@autox.team.net
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