My viper fan install.

From: Mallett, Donald B (Donald.Mallett@BNSF.com)
Date: Sun May 11 2003 - 03:53:18 EDT


> I found most of what I need to install the fan and wiring from stuff I all
> ready have. Saving a few $$$ bucks there. I picked up a adjustable t-stat
> from pep-boys, 2 - 30 amp relays from AZ and a small project box from
> Radio Shack. The box is to mount and protect the relays and T-stat in
> under the hood.
>
> I got my wiring all worked out. With the above parts, fan will be
> controlled under the following terms,
> 1) The fan will run off of the PCM signal just as the OEM electric fan
> would have. (low speed)
> 2) Will run whenever the A/C is on. (low speed)
> 3) Temperature can be adjusted on the T-stat, 90 to 210. I'll try it at
> the factory setting of 185. (low speed)
> 4) Also a dash mounted manual override switch will be mounted in the dash.
> This will run the fan on high speed.
>
> If anyone would like a copy of the wiring plan I can fax it to you. Just
> e-mail off list. I'll fax it from work. I work 11pm to 7am ctz.
>
> Mounting the fan is going to a changeling to say the least.
>
> I borrowed a hand held wind gauge from a buddy. With the viper fan wired
> to the battery with the motor running here what I got....
>
> battery voltage w/out fan running (DVM)....... 13.65
> Just the yellow wire and ground....... 26mph 13.35
> Just the orange wire and ground...... 24mph 13.50
> both yellow and orange and ground.. 26mph forgot to look :-(
> Meter held in front radtior. A/C on... 7mph
> Meter held in front radtior. A/C off.... could not get read due to low
> engine temp. fan not engaged.
>
> I'm thinking that the small difference between high and low speed is just
> the fact that the fan is running with just about no load.
>
>
> --
> *------------------------------Y2KOTA------------------------------*
> Don Mallett
> Y2K QC 4.7L Auto SLT+
> http://www.mallettservices.com/y2kota.html
> http://www.dakota-truck.net/profiles/dakota/QwkvWz@DAJFf6/profile.htm
> *----------------------GRAB LIFE BY THE HORNS----------------------*
>
> Feels good to be back!
>
>



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