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Need help with electric choke, 12 volt ?

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Old Sep 19, 2006 | 10:54 PM
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From: Brandon Manitoba
Default Need help with electric choke, 12 volt ?

I am trying to get the electric choke on my 80 corvette to work so I don't have to pump it for 2 minutes to keep it running. A friend told me that the correct wire to connect to the electric choke came from the firewall harness and was light blue in color. That wire seems to have no power whatsoever. I have a wire coming from the same main firewall harness that is red with a small connector and nothing connected to it ? Does anybody know what color the correct wire is for the choke and does the choke require 12 volts of less ? If it is 12 volt I can hook on to this red wire ? thanks
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Old Sep 19, 2006 | 11:00 PM
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The choke requires a full 12volts. I can't comment on the functions of the colors you mentioned but a good place to get power is the winshield wiper motor feed. It's only active when the ignition switch is on and is 12v.
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Old Sep 19, 2006 | 11:09 PM
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From: Brandon Manitoba
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The red wire I am talking about has 12 volts and comes on with the ignition key . I think I will give it a try until I can find the correct wire. I am going to order a 1980 specific wiring diagram , I think it would be very helpfull sorting out 26 years of Bubba rooting around in the wiring harness of this car ???
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Old Sep 19, 2006 | 11:40 PM
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I hooked the choke to the red lead and when I turn on the ignition the washer fluid starts to shoot out ?? Now what should I try ?
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Old Sep 19, 2006 | 11:43 PM
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Your friend is right lt blue wire-but it comes from a relay-check the fuse for that relay-choke heater fuse 20 amps-nice book,you'll need it.
http://www.ecklers.com/product.asp?p...&dept%5Fid=226
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Old Sep 20, 2006 | 01:05 AM
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I checked the fuse and it was good. So why is there no power from the light blue wire ?
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Old Sep 20, 2006 | 05:35 AM
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I hooked mine up to the wiper motor also, I thought it was the yellow or middle wire. Just check the 3 wires to see which one is hot with the key on.
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Old Sep 20, 2006 | 07:14 AM
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Originally Posted by bams12
I checked the fuse and it was good. So why is there no power from the light blue wire ?
Check this thread out and maybe PM Sixfooter he was going to figure out how that relay worked.
http://forums.corvetteforum.com/show....php?t=1484686
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Old Sep 20, 2006 | 10:01 AM
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The Lt Blue wire is correct, it should have 12v on it witht he key on. It gets its voltage from the Choke Heater Relay. The choke heater relay is off during normal operation with 12v applied to both brown wires on the coil side of the relay. The relay is on only with the key on, If the Diode Trio in the alternator dies, it usually shorts and provides a ground for the Choke relay, this turns off the choke and turns on the alternator light and the choke heater light.
If the relay is unplugged, the choke heater light should also come on, thats a good test to see if the relay works.

Is the Choke Heater light on?
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Old Sep 20, 2006 | 01:20 PM
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From: Brandon Manitoba
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If you mean the light on the speedo / tach that says choke , no it is not lit.
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Old Sep 20, 2006 | 02:17 PM
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Originally Posted by bams12
I hooked the choke to the red lead and when I turn on the ignition the washer fluid starts to shoot out ?? Now what should I try ?
Sounds like you found the washer fluid motor wire - at least you know what the "RED'' wire should be connected too!
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Old Sep 20, 2006 | 02:39 PM
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on an el Camino that I once resurrected I used the wire that went to the blower motor, it worked like a dream.
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Old Sep 20, 2006 | 02:58 PM
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Originally Posted by bams12
If you mean the light on the speedo / tach that says choke , no it is not lit.
Well, that might just mean that there is no light bulb in there. OK, you need to make sure there is a choke relay, i was thinking about this and wondering why your choke was not connected in the first place, Bubba might have deleted it. I'l not sure where exactly the relay is supposed to be located, but it will have 2 brown wires, 1 lt blue wire, and 1 grn/wht wire. I would look for it next
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Old Sep 20, 2006 | 04:08 PM
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Originally Posted by SIXFOOTER
Well, that might just mean that there is no light bulb in there. OK, you need to make sure there is a choke relay, i was thinking about this and wondering why your choke was not connected in the first place, Bubba might have deleted it. I'l not sure where exactly the relay is supposed to be located, but it will have 2 brown wires, 1 lt blue wire, and 1 grn/wht wire. I would look for it next
Six its in the console under the shifter
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Old Sep 20, 2006 | 04:42 PM
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Ahh, cool, thanks
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