I picked up a Taurus fan to replace the original flex fan. I won't be installing it for a while but want to plan ahead for the electrical connection. Right now, I'm installing dual horns and a relay and I'm looking at this http://www.summitracing.com/parts/PRF-70107/ All circuits are rated for 20A. Is 20A enough to power the Taurus fan? I looked at the AutoZone online Repair Guide for a Taurus to find what size fuse they used. Didn't find a cooing fan fuse -- just a 20 gauge fusible link. Anyone know what size fuse would be appropriate for the fan?
Nope 20 wont do it. They draw over 20 just running. Start up spike is well over 40 if I remember right. My Jeep fan in mine has a 40A fuse same as the factory app. for that fan. Runs around 21 amps and has a real quick/short spike to over 40A at start up. I'm sure one of the guys will chime in with exact Amp. draw numbers.
OK, thanks for the info. :Handshake Not what I wanted to hear but what I guess its what I NEEDED to hear. I'll have to look for another setup. Thought about a fusible link but don't really relish the thought of melting wires in my engine compartment.:16suspect
This? I guess it could be wired with this 50A fuse and #8 wire? http://www.jegs.com/i/JEGS/555/10520/10002/-1 Or, is that overkill? I'm not finding 40 amp fuses. Looked on Summit and Jegs.
how do you plan on controlling the fan...manual or temp sensors (2) the thing with these fans, you can't run high/low sides at the same time. my setup cuts the low side on at 180* then if 205* is reached, it cuts the low side off as it turns the high side on...this way it doesn't spike the high side from a dead stop...the relay is powered through a 20 amp fuse... ......
Interesting. I'll use a temp control switch but haven't got that far yet. What temp control did you use? Sounds like the way to go. There is a black box that mounted on the top of the Taurus radiator support and was wired in before the fan. Don't know its function. Any chance that's a temp control? It didn't look like it was in a position to sense the radiator temp but don't know what else it would be.
i used (2) temp. sensors ...one in the...t-stat housing... on at 180* the other in the intake...on at 205*... the key is the relay to turn one on and the other one off at the same time... ...:Handshake...
OK, I think I'm getting the picture. I suppose you used one-wire, on/off sensors like for idiot lights. I'm not finding specs on the sensors. Where did you find the 180* and 205* sensors? Thinking you used a relay that switches one output when its not energized and another when it is. Sounds neat. Think I see how do do it with two relays in series. Will have to draw it to be sure.
Fan Controller I couldn't find any info on triggering temperatures for the Summit sensors. Did a Live Chat with Summit asking about the specs and the guy suggested I use a fan controller with a probe outside the radiator rather than regular coolant temp sensors. He suggested this one http://www.summitracing.com/parts/FLX-31147/ but I ordered this one http://www.summitracing.com/parts/FLX-31149/ because it also turns the fan on with AC regardless of coolant temp and it has a manual override switch. Instructions are to wire the controller directly to the fan with no relay. I'll probably try it that way using either the hi or low fan speed and see how I like it. Later may add another sensor and a relay to select one of the two speeds. Thanks for your help. It probably doesn't seem like I followed your advice but you helped get me where I wanted to be.
http://www.summitracing.com/search/...g/Part-Type/Fan-Switches-Thermal/?Ns=Rank|Asc Sum-890015 on 185/off 170 hypertech 4028 on 200/off 185 ......
make sure all the wire that runs the fan can handle a (60-70 amp) spike if you run the high side from a dead stop...this 2 speed fan is built so the low side is running before going to high... a few people have used the type controller you have to only have them burn out in a short time... ...:Handshake...
Reason I couldn't find the info at Summit was I was searching for coolant temperature sensors rather than fan controllers. Too late now, I ordered the stuff last night and it already shipped. Thanks for the heads up on switching on the hi speed. If low speed isn't enough I will add the relay to switch to hi speed from low speed, not from off. Having the fan turn on with the AC is a nice advantage with the controller I'm getting.
The fan controller we use in all our custom radiator applications is the Dakota Digital unit PN PAC-2700. It is fully programable, simple to wire, supports dual speed fan applications and comes with a 70amp relay. I best feature is it will wire to any electric gauge sender so no extra senders are needed.
