inline4 Posted August 16, 2009 Report Share Posted August 16, 2009 because I didnt want to forget to turn it off when the car is off... but it draws too much current and dims the lights when on there. does anyone have an idea on how to hook it up to the battery, but lets say a relay in place so it will turn off when the key is removed? Quote Link to comment
yello620 Posted August 16, 2009 Report Share Posted August 16, 2009 Thats way too much power draw to not be on a relay. If wired to the ACC through a relay, then you will be getting direct battery power to the fan without the large power draw going through the ignition switch. Have you wired in a relay? understand what they do? Quote Link to comment
thisismatt Posted August 16, 2009 Report Share Posted August 16, 2009 Doesn't it also kind of defeat the point of an electric fan if it's running all the time? Quote Link to comment
yello620 Posted August 16, 2009 Report Share Posted August 16, 2009 doesn't it also kind of defeat the point of an electric fan if it's running all the time? yes Quote Link to comment
bonvo Posted August 16, 2009 Report Share Posted August 16, 2009 http://www.summitracing.com/parts/HDA-3647/ Quote Link to comment
ggzilla Posted August 16, 2009 Report Share Posted August 16, 2009 so it will turn off when the key is removed?For this, you can wire it to ACC or IGN. When the key is removed, it will turn off. Better yet, use a temperature switch, like and 80s Nissan one that fits in the radiator hose. Wire it direct (not through ACC or IGN) so it cools the engine a bit after the car is turned off. When the temp drops the fan goes off. Totally automatic. In all cases, send the your 12V wire to a relay. They are $1 at pull-a-part, you can get a Nissan relay and a bit of wiring. So it's BAT--> relay --> fan. And 12V -- thermo switch --> relay trigger. Quote Link to comment
inline4 Posted August 17, 2009 Author Report Share Posted August 17, 2009 Thats way too much power draw to not be on a relay. If wired to the ACC through a relay, then you will be getting direct battery power to the fan without the large power draw going through the ignition switch. Have you wired in a relay? understand what they do? no and yes, I will have to. Quote Link to comment
inline4 Posted August 17, 2009 Author Report Share Posted August 17, 2009 http://www.summitracing.com/parts/HDA-3647/ where would you stick that probe? Quote Link to comment
hoov100 Posted August 17, 2009 Report Share Posted August 17, 2009 I would avoid using a totally automatic controller box, as the unit could fail and you wouldnt know until the temp is HOT and the problem of having it on after the car is off is that is only cooling the water in the radiator, unless you have an elecetric water pump, plus if you have a weak/failing battery it will most likelly drain it. Quote Link to comment
ggzilla Posted August 17, 2009 Report Share Posted August 17, 2009 Totally automatic control is factory Nissan equipment starting in the early 80s. If you use the factory parts, it is very reliable. If it does fail, you will know it when you glance at the Temperature Gauge. I glance at my temp gauge about every minute or so while driving. Hasn't overheated in 20 years, but still checking .... Quote Link to comment
Hyphy Posted August 17, 2009 Report Share Posted August 17, 2009 You stick the probe through the fins in the radiator. Preferably near the top, which is usually where the coolant returns from the engine anyway. Quote Link to comment
ariascarlos1990 Posted August 17, 2009 Report Share Posted August 17, 2009 heres the setup in my truck... Quote Link to comment
inline4 Posted August 17, 2009 Author Report Share Posted August 17, 2009 (edited) should I get an adjustable one, if so what temps should I have it on/off, or a preset one? I let the motor run to 200 degrees the other day before I caught the fan :o so I think its time to rewire it. edit: it's an s13 ka24de. Edited August 17, 2009 by inline4 Quote Link to comment
ggzilla Posted August 17, 2009 Report Share Posted August 17, 2009 Nissan preset for 1980-1982 B310: 21595-M0206 SWITCH-THERMO * ON: 83-87 C (181-189 F) * OFF: 78-81 C (172-178 F) 05412-1600P GASKET-B 21596-M3000 ADAPT-THERMO SWITCH [inline adapter, fits in lower radiator hose] Quote Link to comment
nis720 Posted August 17, 2009 Report Share Posted August 17, 2009 I had the Hayden adjustable one, after 5 years it's finally started going out. Sometimes it would come on as soon as turned the key (randomly) and sometimes it would buzz (not come on completely). I have now replaced it with a painless wiring non-adjustable one. The one I got comes with a 200 on/180 off sending unit. It works fine but I will be changing the sending unit to a 185 degrees on/170 degrees off. http://www.summitracing.com/parts/PRF-30111/ Quote Link to comment
bonvo Posted August 17, 2009 Report Share Posted August 17, 2009 where would you stick that probe? i stuck it close to the upper radiator hose on the rad itself that way it picks up the temp at the hottest part and the fan turns on a little sooner Quote Link to comment
ariascarlos1990 Posted August 17, 2009 Report Share Posted August 17, 2009 well mine has a adjusting screw that I set to my temp. gauge in my dash. wait till your car warms up till the needle is just about at half then turn the knob until the fans kick on..... its Simple. Quote Link to comment
bonvo Posted August 17, 2009 Report Share Posted August 17, 2009 well mine has a adjusting screw that I set to my temp. gauge in my dash. wait till your car warms up till the needle is just about at half then turn the knob until the fans kick on..... its Simple. thats exactly what i did :D Quote Link to comment
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