Can someone draw up a wiring diagram for the taurus fan?
02-15-2010, 11:42 PM
#1
Can someone draw up a wiring diagram for the taurus fan? I can't seem to find a way to make it work with both speeds properly. The fan has 3 wires, a ground, low speed, and high speed. When the high speed is turned on, the low speed needs to be turned off.
Any ideas on how to wire up a set of relays? The low speed uses a 30 amp relay while the high speed needs a 75 amp relay (TONS of draw on startup, with 30 amps constant being used on high speed)
The fan bolted up to the radiator perfectly, and the low speed flows more then most aftermarket 16 inch fans, but it'd be nice to have the high speed as an emergency backup for the really hot days in traffic with the AC on or at the track.
Any ideas on how to wire up a set of relays? The low speed uses a 30 amp relay while the high speed needs a 75 amp relay (TONS of draw on startup, with 30 amps constant being used on high speed)
The fan bolted up to the radiator perfectly, and the low speed flows more then most aftermarket 16 inch fans, but it'd be nice to have the high speed as an emergency backup for the really hot days in traffic with the AC on or at the track.
02-16-2010, 05:27 AM
#4
That diagram isn't going to do it. With that hook up it is still possible to have both relays energized at the same time.
What I did was hook the fan power wire from the low speed relay to the normally closed contact on the high speed relay. So in chpmnsws6's diagram, take the wire from the 30 pin on the low speed relay and instead of fusing it directly to the battery hook it to the 87a pin on the high speed relay. You can leave the fuse in there. That way when high speed relay is energized it cuts off power to the low speed relay.
By the way, rather than pay big bucks for a 75 amp relay, just grab the fan relays off the car you got the fan from.
What I did was hook the fan power wire from the low speed relay to the normally closed contact on the high speed relay. So in chpmnsws6's diagram, take the wire from the 30 pin on the low speed relay and instead of fusing it directly to the battery hook it to the 87a pin on the high speed relay. You can leave the fuse in there. That way when high speed relay is energized it cuts off power to the low speed relay.
By the way, rather than pay big bucks for a 75 amp relay, just grab the fan relays off the car you got the fan from.
02-16-2010, 10:58 AM
#7
TECH Apprentice
iTrader: (1)
Join Date: Oct 2005
Location: Port Charlotte, FL
Posts: 314
Likes: 0
Received 0 Likes
on
0 Posts
No that diagram is wrong also. What he means is where 12v+ goes from the fuse into 30 on relay 1, cut it, reroute it to 87A on relay 2, 87A is energized only when relay 2 is at rest, so therefore relay 1 and relay 2 cannot be on at same time. Just between 87A on relay 2 and 30 on relay one put in a little fuse.
Trending Topics
02-16-2010, 10:59 AM
#9
No that diagram is wrong also. What he means is where 12v+ goes from the fuse into 30 on relay 1, cut it, reroute it to 87A on relay 2, 87A is energized only when relay 2 is at rest, so therefore relay 1 and relay 2 cannot be on at same time. Just between 87A on relay 2 and 30 on relay one put in a little fuse.
Feel free to fix it using MS paint.... PLEASE!
02-16-2010, 11:59 AM
#10
You want the power to run through the high speed relay and into the low.
Easiest way to fix your last diagram is to swap the "High Side" and "Low Side" labels at the fan.
