3 wires, Ground, Low, High.
I have mine on a manual selector for fan speed. I have to unplug and
reconnect to the speed I want. I leave it connected to high as I'm in FL and
temps are a little balmy most of the year.
Ground and low will cause Low speed, and Ground and High will cause High
speed. I'm not sure if sending power to high and low at the same time is a
good thing. Worst case scenario will be a burnt fan motor. In the mean
time, you may want to see about modifying the wiring diagram to feed only
low OR high.
TonyC
-----Original Message-----
From: Travis Bailey <dusterrt@msn.com>
To: dakota-truck@dakota-truck.net <dakota-truck@dakota-truck.net>
Date: Sunday, August 08, 2004 11:07 PM
Subject: DML: Viper Fan/Saab Switch Followup II
>
>I headed into day two with my electric fan setup. I am mainly reporting
>these as no one had any input when I had questions about doing the Saab two
>speed switch due to it either not working the way they liked or never got
>around to putting it together. All in all I am happy with it so far and
>don't plan on making any changes.
>
>Once again, it's a nice day in the mid or high 70s. Most of the time I've
>been running around with the fan off alltogether. However, once the engine
>gets good and warmed up low speed pretty much stays on, even on the highway
>(this is where the in cab kill switch is nice). Just to see how it worked
I
>drove around in town with it off where my engine temp gets to around (a
>guess) 190-195, and then I let it idle in the drive to get it a little
>warmer. This set off high speed on the switch and obviously the fan. I
>will say the fan performed very well..cooled it quite quickly. Once the
>temp got down to the 180 or so mark it dropped it to low speed where it
just
>stayed on until I shut the truck off.
>
>So in a nutshell: the switch will trigger the fan at 180 (low) and 195
>(high). If engine temp triggers high it will cool until 180 and then it
>will run at low speed until 175 or so. (Mine doesn't get cool enough to
>switch off; my friend mentioned that might not be a bad thing since it's
>probably harder on the fan motor to be cycling on and off all the time
>anyway. Just to be safe I plan on upgrading my alternator sooner or
later.)
>
>When it triggers high it also triggers low so both of my relays are active
>when high speed is on, not just one. As far as if the fan is designed to
>work like this, I don't know. Didn't seem to make a difference during
bench
>testing if the low speed wire got power or not.
>
>Someone had mentioned in a message I found in the archives about the fan
>runs on low when either of the wires are hot and high when both. On mine
at
>least there was a high and a low wire, orange stripe was low and yellow was
>high. Sending power to both didn't make it run faster. Speaking of bench
>testing, make sure you secure it down somehow, mine really wanted to move
>somewhere other than where I had it laying down! Lol.
>
>Other notes: not sure if I addressed this in my first message but this fan
>is pretty quiet. Maybe it's just my duals but it seems quieter than the
fan
>in my sister's Intrepid she had. So it is by far a lot quieter than a
stock
>engine driven fan.
>
>That's all for now.
>
>Travis
>'92 Dak 5.2 4x4
>
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>
This archive was generated by hypermail 2b29 : Wed Sep 01 2004 - 00:53:41 EDT