Temperature Switch activation

Temperature Switch activation - 10/16/09 12:34 PM

Just wondering if anyone knows if a temperature switch (single spade terminal, in radiator type) grounds the circuit? I use one to turn my fans on, but it has to high of temperature and I was wondering if I can simply ground the wire and use my switch to activate the fans when I want?

Posted By: BBR

Re: Temperature Switch activation - 10/16/09 12:37 PM

Bust out the multimeter. Some are redundant ground, others are not.

Posted By: 408strokerdart

Re: Temperature Switch activation - 10/16/09 01:15 PM

Quote:

Bust out the multimeter. Some are redundant ground, others are not.

Please help with my electrical ignorance....what does redundant ground do for the circuit?

Posted By: max_maniac

Re: Temperature Switch activation - 10/16/09 01:24 PM

I have a Be Cool rad and fan set up and the fans are temp controlled. they come on and go off at 160 and I needed them to stay on longer for cool down so I just ran a ground wire off of the temp switch and use the fans manually.

I did buy another temp control which is supposed to come on at 160 and go off at 140 but I have not installed it yet.

Russ

Posted By: BBR

Re: Temperature Switch activation - 10/16/09 01:48 PM

Quote:

Quote:

Bust out the multimeter. Some are redundant ground, others are not.

Please help with my electrical ignorance....what does redundant ground do for the circuit?

It really doesn't do anything for the circuit except maybe provide a better ground.

Some temp switches ground through the body of the switch as well as the terminal. (redundant)

Others have both terminals completely insulated from the body.

Posted By: 408strokerdart

Re: Temperature Switch activation - 10/17/09 12:43 PM

Quote:

I have a Be Cool rad and fan set up and the fans are temp controlled. they come on and go off at 160 and I needed them to stay on longer for cool down so I just ran a ground wire off of the temp switch and use the fans manually.

I did buy another temp control which is supposed to come on at 160 and go off at 140 but I have not installed it yet.

Russ

Thanks Russ, What control is that? I need something to do the same thing...in the same temperature range.

Posted By: MR_P_BODY

Re: Temperature Switch activation - 10/17/09 12:53 PM

My buddy has a probe in the rad then the wire goes
to a adjustable stat... all could be purchased at NAPA

Posted By: max_maniac

Re: Temperature Switch activation - 10/17/09 01:32 PM

Quote:

Quote:

I have a Be Cool rad and fan set up and the fans are temp controlled. they come on and go off at 160 and I needed them to stay on longer for cool down so I just ran a ground wire off of the temp switch and use the fans manually.

I did buy another temp control which is supposed to come on at 160 and go off at 140 but I have not installed it yet.

Russ

Thanks Russ, What control is that? I need something to do the same thing...in the same temperature range.

Moroso temp control switch part # 63760. Will switch on at 165 and off at 140 and can comes with a switch so you have a choice for it to be automatic or manual.

Russ

Posted By: 340B5

Re: Temperature Switch activation - 10/17/09 03:00 PM

If it's a single wire,it grounds the circuit. Most likely a piezo-resistive sensor that turns the fan on through a relay. It could be that it is slightly more complicated and it senses the grounding, but I doubt that. In either case, tapping in w/ a switch to ground would turn the fans on.