[TR] wiring needed for my pos. ground car!

[wbeech]

It is a direct current fan so why is there any harm in simply running the
black to positive and red to ground?

Bill B
'58 TR-3A TS/30766 L
"I love it, she hates it... the car, of course!"
 

-----Original Message-----
From: triumphs-bounces+wbeech=flash.net at autox.team.net
[mailto:triumphs-bounces+wbeech=flash.net at autox.team.net] On Behalf Of Paul
Dorsey
Sent: Tuesday, October 30, 2007 9:57 PM
To: list Triumph
Subject: [TR] wiring needed for my pos. ground car!

Thru eBay, I bought Bob Danielson's new Spal 185 Fan Harness and relay (w/o
temp sensor).  Bob sold his because he already had the harness.  He also
told me that instructions for it were at:
http://www.spalusa.com/fans/automated/tech_sheets/FRH-185FH-195FH.pdf
  I studyed the 'single fan wiring diagram' found on the first diagram on
the second page of the above link.  I did this because I don't have
immediate plans for running anything but a toggle switch to turn on and off
the 'pusher'
electric fan since this fan will be in addition to the OEM engine fan.

  My big question is how to wire it so that I can use it on my positive
ground car.  When I called the number shown for Spal Technical Help the guy
was also clueless?  That's weird, he even suggested that I might be able to
run it straight from the switch.  Even I knew that it needs a relay instead
of doing this!

  The one thing that I do know after testing it out with my car battery is
that the fan's ground (black) must be hooked to the battery's + pole, to get
it to turn the correct direction.

  I'll share one unsuccessful scenario given to me by the Spal guy: (I'll
concede that I proably copied this wrong).  It's adapted from the 'Single
Fan Wiring Diagram' shown above.
      yellow relay wire (14 ga.) goes to battery's negative pole.
      gray relay wire (20 ga.) (could go to a sensor) but I have it just
going
to a toggle switch and on to         the battery's positive pole.
      red relay wire (14 ga.) to fan's red wire
      orange relay wire (20 ga.) runs to ignition switch.
      fan's black wire to the TR3's grounding

  Somebody please tell me that I bought the right relay for my positive
ground Triumph!

  Thanks,
  Paul Dorsey 60 TR3
_______________________________________________
wbeech at flash.net

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