I have a 1968 chevelle Malibu with dummy lights and I am trying to install a double electric fan and I got a fan control module and on the discriptuon of the module it says yellow wire must go to ignition and I am curious as to if I can connect the yellow wire from the module to the yellow wire in the harness that normally would go to the starter. I am not using the yellow wire in the harness because I’m not using points. The pictures below are of the yellow wire coming out of the harness and the yellow wire coming out of the module. Thank you in advance. This may not make a lot of sense so ask me if you need me to explain more.
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Electric fan
Alex lowrie
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I have a 1968 chevelle Malibu with dummy lights and I am trying to install a double electric fan and I got a fan control module and on the discriptuon of the module it says yellow wire must go to ignition and I am curious as to if I can connect the yellow wire from the module to the yellow wire in the harness that normally would go to the starter. I am not using the yellow wire in the harness because I’m not using points. The pictures below are of the yellow wire coming out of the harness and the yellow wire coming out of the module. Thank you in advance. This may not make a lot of sense so ask me if you need me to explain more.
![Image]()
![Image]()
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2,503 Posts
Put a multimeter on your desired yellow ignition wire and see if it has a full 12 volts with the key on.
Rick
Rick
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6,021 Posts
Check amps for the fan and go with appropriate wire.
You can power off the horn relay and install a lighted toggle switch.
Rick
You can power off the horn relay and install a lighted toggle switch.
Rick
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1,516 Posts
hi
THIS CAN BE UNDERSTOOD 2WAYS but i doubt that
Ignition source ---in an electric fan scenario would probably mean just a powered wire that tuns on when engine is on ,, commonly called engine run power feed ie most power accessories use this
If chasing a signal wire for fan module use any engine run power feed on fuse box
Assuming this isto power up fan module ?
Ignition source --- for an RPM monitoring device
NB never ever ever install anything on the 2 main ignition circuits [not even low current draw like a relay trigger nothing at all ].r
1st wire powers thru 12v wire to ign coil ENG START
2nd wire powers thru ballast wire/resistor to ign coil ENG RUN
THIS CAN BE UNDERSTOOD 2WAYS but i doubt that
Ignition source ---in an electric fan scenario would probably mean just a powered wire that tuns on when engine is on ,, commonly called engine run power feed ie most power accessories use this
If chasing a signal wire for fan module use any engine run power feed on fuse box
Assuming this isto power up fan module ?
Ignition source --- for an RPM monitoring device
NB never ever ever install anything on the 2 main ignition circuits [not even low current draw like a relay trigger nothing at all ].r
1st wire powers thru 12v wire to ign coil ENG START
2nd wire powers thru ballast wire/resistor to ign coil ENG RUN
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Thats a pretty nice looking car engine compartment, how come you want it to go to your starter trigger? I have some instructions here from mine and that wire is for the thermostat switch or ignition. I would install a thermostat switch and run it through a master toggle switch just in case you want to turn the fan off for some reason. If you ran that wire to your ignition it would always be on when your car is on and they are like a weed blower noisy.
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To be completely honest with you this is my first car I’m rebuilding and I’m 16 so I’m still figuring things out, it is a frame of restoration and I had the farm powder coated and inner fender wells and engine painted.just trying to do things right👍
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If you post a link to the specific fan controller module you're using, we might be able to give better help.
That looks like a relay in your last picture, they probably want a key-on power source for the low side (85/86 terminals). You're better off looking at your fuse panel for a terminal labeled IGN and use that for your power source.
Nice job getting your hands on a '68 at age 16. I got my '70 when I was 17 and I turned 50 earlier this year. An electric fan was probably my very first mod, as my car had a mechanical fan with no shroud when I got it.
That looks like a relay in your last picture, they probably want a key-on power source for the low side (85/86 terminals). You're better off looking at your fuse panel for a terminal labeled IGN and use that for your power source.
Nice job getting your hands on a '68 at age 16. I got my '70 when I was 17 and I turned 50 earlier this year. An electric fan was probably my very first mod, as my car had a mechanical fan with no shroud when I got it.
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The yellow wire is the resistance wire bypass that only has power when the starter is engaged. That will not work for you.
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Yep, you need to run the orange wire (shown in yellow, labeled orange wire), pin 85, to IGN on your fuse block. When you turn the key on, there will be 12v on pin 85 of the relay. When your car gets up to temp, that sensor will provide a ground to pin 86, completing the low-side circuit, which will in turn connect pin 87 to 30 and provide the actual power to your fans.
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The spal type diagram is one I use.
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why. race car?
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