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05-29-2011 #1
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Need my electric fan to turn on when AC is on?
Just installed a electric fan and dont know how to hook up the AC comp. to the fan
i think i have the Binary switch at the high pressure line do i tap into that?
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05-29-2011 #2
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Surf,
That's the simplest way. Use the wire from the binary switch that goes to the compressor to power the fan relay.John Parsons
UnRivaled Rides -- Modern upgrades for your ride.
UnRivaled Rides recent project -- LS9-powered 69 Camaro
05-29-2011 #3
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BTW, I deleted your other thread, moved this one to the A/C section and left a permanent redirect here in the Wiring section. That way your question is visible in both places, but there's only thread.
John Parsons
UnRivaled Rides -- Modern upgrades for your ride.
UnRivaled Rides recent project -- LS9-powered 69 Camaro
05-29-2011 #4
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You really should have a trinary switch. If you wire the relay to the compressor then the fan is running while you're doing 70 miles an hour for no reason. I have been told it's not good for the fan for that to happen but can't confirm it.
That said, we have done them both ways I just prefer and recommend the trinary switch
06-02-2011 #5
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Trinary switch in both my conversions, that's exactly what it's made for.
06-02-2011 #6
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I also prefer a trinary switch. It's really the better method, especially with electric fans.
John Parsons
UnRivaled Rides -- Modern upgrades for your ride.
UnRivaled Rides recent project -- LS9-powered 69 Camaro
06-02-2011 #7
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with air being forced through it...it may be forced to turn in the wrong direction, which would not be good for the fan motor if it is "on".
1970 RS/SS350 139K on the clock:
89 TPI motor w/ 1pc rear seal coupled to a Viper T56 via Mcleod's modular bellhousing w/ hydraulic T/O bearing from the Viper, 12 bolt rear w/ 3.73 gearing, SC&C upper control arms, factory lowers with Delalums, C5 brakes at all four corners, Front Wheels 17x8's with Sumi 255/40/17 and Rear Wheels 17x9's with Sumi 275/40/17.
Brief description of the work done so far can be found here: http://www.nastyz28.com/forum/showthread.php?t=112454
06-02-2011 #8
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I'm running this and like it so far. It's made by a small company local to me. If you order you need to let them know that you plan on using your ac as a trigger.
http://cgi.ebay.com/ebaymotors/ws/eB...STRK:MESELX:IT
Jason Mitchell
1969 Camaro @ Dutchboys
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