Electric choke power source? - Chevy Nova Forum
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Old 27th-November-2013, 12:53 PM   #1
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Electric choke power source?

Where are you guys tapping into for you power source for the electric chokes?

I was thinking of using the windshield wiper motor but I'm not sure which wire on the wiper motor to tap?

Here is a pic of my wiper motor any ideas?

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Old 27th-November-2013, 01:19 PM   #2
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Quote:
Originally Posted by epfatboy View Post
Where are you guys tapping into for you power source for the electric chokes?
I was thinking of using the windshield wiper motor but I'm not sure which wire on the wiper motor to tap?
Here is a pic of my wiper motor any ideas?Attachment 53881
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That is what I did for a quick hook up. Just take do a voltage check on the suspect wire and make sure it is 12 volt (Ign ON) and 0 (Ign OFF).
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Old 27th-November-2013, 02:26 PM   #3
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Did the same here


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Old 27th-November-2013, 06:47 PM   #4
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It's a good idea to wire it through an oil pressure switch so the choke won't begin to heat until the engine has oil pressure. That's how the factory wired them.
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Old 27th-November-2013, 09:16 PM   #5
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Simplest way is to wire it from the coil positive wire or "HEI wire". All the coil or HEI wire is is a switched ignition power feed that has power during cranking as well as during run.
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Old 27th-November-2013, 10:10 PM   #6
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I'm running an I6, I ran my positive to the coil and the ground to the coil mounting bracket. It works great.

Just my

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Old 27th-November-2013, 11:02 PM   #7
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I thought about the HEI wire as well but read that it might not be a good idea to steal power from the HEI... When I looked around the engine bay the next best candidate seemed like the wiper motor..

I have a mechanical oil pressure gauge so I think wiring thru the sender is not an option.
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Old 27th-November-2013, 11:31 PM   #8
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I wouldnt steal power from the ignition. We do everything to get more juice there and then we steal from it??? Go to the wiper motor. I did that. What I did was just used my light tester to check for power with ignition on/off.
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Old 28th-November-2013, 01:03 AM   #9
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I wouldnt steal power from the ignition. We do everything to get more juice there and then we steal from it??? Go to the wiper motor. I did that. What I did was just used my light tester to check for power with ignition on/off.
There is no power loss at the ignition circuit whatsoever when wiring the choke to it. If it was wired in series to the coil then it would be so minimal that you would have to hook an oscilloscope to see the difference in voltage and plus no "loads" on these cars are wired in series, unless you wire in something in series on your own. Wiring it in parallel, the alternator carries the task of the extra load...which again is minimal. I don't say anything for electrical if it isn't true, everything I state is in fact, fact. Tried and true, tested and proven. There is no if's or maybe's, or kinda's.
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Old 28th-November-2013, 01:51 AM   #10
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There is no power loss at the ignition circuit whatsoever when wiring the choke to it. If it was wired in series to the coil then it would be so minimal that you would have to hook an oscilloscope to see the difference in voltage and plus no "loads" on these cars are wired in series, unless you wire in something in series on your own. Wiring it in parallel, the alternator carries the task of the extra load...which again is minimal. I don't say anything for electrical if it isn't true, everything I state is in fact, fact. Tried and true, tested and proven. There is no if's or maybe's, or kinda's.
But what if... lol
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Old 28th-November-2013, 10:52 AM   #11
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I have a mechanical oil pressure gauge so I think wiring thru the sender is not an option.
Not the sender. This would be a simple on/off switch. The same one you would use for a warning light. Depending on how you want to wire it you could incorporate a low oil pressure warning light and control your choke with the same switch. I used a three prong switch and use it for an oil pressure warning light and a fuel pump cut off safety switch.
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Old 28th-November-2013, 12:20 PM   #12
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Nvscott, I only wish I knew what you were talking about! I barely know enough to hook up a tester to see if a wire is switched. Hell I'm not even sure how to use my multi tester correctly, I stumble about and eventually find the right setting so i make sure I have the right voltage.

Either way I hooked it to the wiper motor and I did a hell of a job. Found the right wire, exposed some copper, wrapped the new wire around the old and soldered a splice. Sealed it with shrink tape and ran the new choke wire in a black fabric wrap, looks pretty clean.


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Old 28th-November-2013, 08:53 PM   #13
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I had an open space in the fuse box so created a new circuit.
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Old 28th-November-2013, 10:17 PM   #14
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thats what i did also.
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