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 Post subject: Electric fan indicator light
PostPosted: Sun Apr 29, 2018 10:48 pm 
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What would be the best way to wire a indicator light to the electric fan to let me know the fan is actually on ?

That would makes the adjustment of the fan controller temperature a lot easier !!!

Thanks


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 Post subject: Re: Electric fan indicator light
PostPosted: Sun Apr 29, 2018 11:13 pm 
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Location: Oregon Coast Dairy Country. Land of stumps, dumps, and "Liquid Pumps"
if it's temporary, just run a small speaker wire pair from the driver area around and through the A pillar / door seal area, and out through the engine compartment and up to the fan. Terminate one to ground, and the other with a "bed of nails" clip to the fan power wire.

put whatever kind of 12v light you want in the driver's area end to signal you. Easy to use, and painless to remove when you're done. Can be used for many other things in a similar way.

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 Post subject: Re: Electric fan indicator light
PostPosted: Mon Apr 30, 2018 1:13 am 
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Thanks , its an quick and easy way to do it as an temporary set up for setting up temp .

But I was thinking of a permanent one with a led , so I guess the question would be : what resistor should I put with the led ?? and serie or parallel ?


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 Post subject: Re: Electric fan indicator light
PostPosted: Mon Apr 30, 2018 2:29 am 
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Location: Oregon Coast Dairy Country. Land of stumps, dumps, and "Liquid Pumps"
definitely parallel.

I would shop for something on Ebay or Amazon or a local electronics store, that already has it's own voltage regulation.

_________________
'06 Lbrty Sprt CRD 150K

Sasquatch
DSS Turbo
CAT-elimntr
Weeks Stg1&2 EGRfix
PV-200
BLING
vent gauges

IDParts
head
cams
rockers
Timing set
ARP studs
eTn1 GX2123 5v GPs

YETI Custom Tune
Flowmaster 8325508
Carter P76611M
GM 12611872
Hayden 2986
GM 15976889
PATC Custom Billet
2010 Ram Hemi Trans
Sonnax 44957
Transgo kit
Cooper 51770


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 Post subject: Re: Electric fan indicator light
PostPosted: Mon Apr 30, 2018 3:19 pm 
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Thx Gord

I found some nice one on E-bay with a little fan sign.


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 Post subject: Re: Electric fan indicator light
PostPosted: Sun May 06, 2018 6:56 pm 
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I coudn't wait for the E-bay shipping so I bought one at my local speedshop.

It's from painless. it works really good , the only thing is a highway speed the fan turning from the wing generate enough current to turn on the led........ other than that it works great !!!!!


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 Post subject: Re: Electric fan indicator light
PostPosted: Sun May 06, 2018 8:29 pm 
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Location: Oregon Coast Dairy Country. Land of stumps, dumps, and "Liquid Pumps"
That could be a good thing!

Now you have an indicator light for when the radiator gets enough bugs to inhibit air flow enough to no longer spin the fan. Time to pressure wash the cooling stack.

_________________
'06 Lbrty Sprt CRD 150K

Sasquatch
DSS Turbo
CAT-elimntr
Weeks Stg1&2 EGRfix
PV-200
BLING
vent gauges

IDParts
head
cams
rockers
Timing set
ARP studs
eTn1 GX2123 5v GPs

YETI Custom Tune
Flowmaster 8325508
Carter P76611M
GM 12611872
Hayden 2986
GM 15976889
PATC Custom Billet
2010 Ram Hemi Trans
Sonnax 44957
Transgo kit
Cooper 51770


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 Post subject: Re: Electric fan indicator light
PostPosted: Tue May 08, 2018 6:42 pm 
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PZKW108 wrote:
I coudn't wait for the E-bay shipping so I bought one at my local speedshop.

It's from painless. it works really good , the only thing is a highway speed the fan turning from the wing generate enough current to turn on the led........ other than that it works great !!!!!


Add a resistor?

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 Post subject: Re: Electric fan indicator light
PostPosted: Tue May 08, 2018 9:04 pm 
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Sir Sam wrote:
PZKW108 wrote:
I coudn't wait for the E-bay shipping so I bought one at my local speedshop.

It's from painless. it works really good , the only thing is a highway speed the fan turning from the wing generate enough current to turn on the led........ other than that it works great !!!!!


Add a resistor?

A resistor might work.
But a blocking diode on the + side of the fan circuit, between the fan motor and LED, will definitely fix it.

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Bought my '05 CRD on June 2nd '07, used with 29,000 miles.
intake elbow and EGR delete. 5 volt bosch glow plugs
Yeti stage 2 ECU tune. Straight pipe exhaust. DIY intercooler hoses
Provent and modified factory 180F thermostat
Replaced cylinder head (cracked) at 160,000 miles + ARP studs
2.5 inch lift, JBA upper arms, 235-85-16 tires.
Still love it.


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 Post subject: Re: Electric fan indicator light
PostPosted: Tue May 08, 2018 10:46 pm 
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flash7210 wrote:
Sir Sam wrote:
PZKW108 wrote:
I coudn't wait for the E-bay shipping so I bought one at my local speedshop.

It's from painless. it works really good , the only thing is a highway speed the fan turning from the wing generate enough current to turn on the led........ other than that it works great !!!!!


Add a resistor?

A resistor might work.
But a blocking diode on the + side of the fan circuit, between the fan motor and LED, will definitely fix it.


I'm having a hard time with this one, wont that also block flow when the motor is on?

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 Post subject: Re: Electric fan indicator light
PostPosted: Wed May 09, 2018 12:24 pm 
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I had to draw it on paper.

Image

It’s just a simple representation of the fan low circuit with the blocking diode in place.
The only drawback is that you would need ~50 amp diode in there.

_________________
Bought my '05 CRD on June 2nd '07, used with 29,000 miles.
intake elbow and EGR delete. 5 volt bosch glow plugs
Yeti stage 2 ECU tune. Straight pipe exhaust. DIY intercooler hoses
Provent and modified factory 180F thermostat
Replaced cylinder head (cracked) at 160,000 miles + ARP studs
2.5 inch lift, JBA upper arms, 235-85-16 tires.
Still love it.


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 Post subject: Re: Electric fan indicator light
PostPosted: Wed May 09, 2018 6:33 pm 
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flash7210 wrote:
I had to draw it on paper.

Image

It’s just a simple representation of the fan low circuit with the blocking diode in place.
The only drawback is that you would need ~50 amp diode in there.


Ah understand what you mean now.

Only problem is getting a diode that can handle the amps the fan pulls, thats probably not easy.

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 Post subject: Re: Electric fan indicator light
PostPosted: Wed May 09, 2018 8:05 pm 
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Location: Oregon Coast Dairy Country. Land of stumps, dumps, and "Liquid Pumps"
I suppose one could make a diode bridge with heat sink, such as found in old alternators. Mounting it insulated would be the hardest part.

_________________
'06 Lbrty Sprt CRD 150K

Sasquatch
DSS Turbo
CAT-elimntr
Weeks Stg1&2 EGRfix
PV-200
BLING
vent gauges

IDParts
head
cams
rockers
Timing set
ARP studs
eTn1 GX2123 5v GPs

YETI Custom Tune
Flowmaster 8325508
Carter P76611M
GM 12611872
Hayden 2986
GM 15976889
PATC Custom Billet
2010 Ram Hemi Trans
Sonnax 44957
Transgo kit
Cooper 51770


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 Post subject: Re: Electric fan indicator light
PostPosted: Wed May 09, 2018 9:06 pm 
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GordnadoCRD wrote:
I suppose one could make a diode bridge with heat sink, such as found in old alternators. Mounting it insulated would be the hardest part.


Or move the LED to the trigger circuit, though that would only show if the fan was commanded on, not if it was actually running.

Or have the trigger circuit trigger a transisitor(or relay) that then allows the fan power to turn the LED on. This way the fan has to be running and the command on for the light to light.


That said, why was this really needed?

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 Post subject: Re: Electric fan indicator light
PostPosted: Wed May 09, 2018 9:46 pm 
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Actually, a 50 amp bridge rectifier could be used.
It’s just a cluster of diodes.
Just clip off the AC leads and only use the + and - leads.
Very easy to find a 50 amp rectifier.

_________________
Bought my '05 CRD on June 2nd '07, used with 29,000 miles.
intake elbow and EGR delete. 5 volt bosch glow plugs
Yeti stage 2 ECU tune. Straight pipe exhaust. DIY intercooler hoses
Provent and modified factory 180F thermostat
Replaced cylinder head (cracked) at 160,000 miles + ARP studs
2.5 inch lift, JBA upper arms, 235-85-16 tires.
Still love it.


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 Post subject: Re: Electric fan indicator light
PostPosted: Thu May 10, 2018 12:31 am 
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Or use the controller that thermorex and I use which has the pin outs for on indication. About $100 at summit racing. Expensive fix I know, but it's the best fan controller I've ever used. I'm wiring up an on indicator myself

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05 CRD: H.D.S2 stat, Ironrock trilink, Integrated air OX rear, OME 2.5, JBA UCA, Moabs245/75 Duratracs, GDE tunes ,Truetrac front,FFD fan,ARP's, 2 micron fuel, new head,rockers, cams,sasquatch battery tray & grid heater, Suncoast, welded EGR port & trans drain, muffler delete,
Mech fan, VH & AC delete,tensioner relocated, rock rails


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