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Old 08-11-2013, 03:46 PM   #1
kcsa75
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What is this wire supposed to connect to

This wire is wrapped in with other factory-installed wires that connect through the plug on the right. Any idea what it does or where it goes?
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Old 08-11-2013, 04:13 PM   #2
Andy4639
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Question Re: What is this wire supposed to connect to

No picture for me.
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Old 08-11-2013, 04:20 PM   #3
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Re: What is this wire supposed to connect to

I see the pics, but cant help with the wire.
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Old 08-11-2013, 04:39 PM   #4
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Re: What is this wire supposed to connect to

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Originally Posted by slow-1 View Post
I see the pics, but cant help with the wire.
No picture here either.
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Old 08-11-2013, 05:13 PM   #5
SS Tim
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Re: What is this wire supposed to connect to

My thought, if it is pink, is the idle stop solenoid found on some trucks. Best thing to do is trace it and match it up to the wiring diagram in the 72 factory service manual. It can be downloaded here.
http://67-72chevytrucks.com/vboard/s...d.php?t=558016
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Old 08-11-2013, 08:16 PM   #6
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Re: What is this wire supposed to connect to

I am not certain without looking at a wiring diagram, but I was thinking carburator electric choke?....... Nope I just looked at the wiring diagram and I am pretty sure it is the idle stop solenoid wire.

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Old 08-12-2013, 10:18 AM   #7
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Re: What is this wire supposed to connect to

So I'm curious, since I just found the same wire. I've got a mystery 350 with a new(ish) Edelbrock Q-jet. Is there any need for that circuit or can I use it to power the electric choke?
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Old 08-12-2013, 11:43 AM   #8
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Re: What is this wire supposed to connect to

I used it to power the electric choke. keyed on power wire
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Old 08-12-2013, 12:11 PM   #9
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Re: What is this wire supposed to connect to

That looks like the HEI wire to me.
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Old 08-12-2013, 01:03 PM   #10
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Re: What is this wire supposed to connect to

Is the AC working properly? What year truck?
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Old 08-12-2013, 01:31 PM   #11
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Re: What is this wire supposed to connect to

Thanks for the replies.

Quote:
Originally Posted by SS Tim View Post
My thought, if it is pink, is the idle stop solenoid found on some trucks. Best thing to do is trace it and match it up to the wiring diagram in the 72 factory service manual. It can be downloaded here.
http://67-72chevytrucks.com/vboard/s...d.php?t=558016
Thanks. I have the service manual. For some reason, wiring is all greek to me, but I may have to do that. The wire is red not pink and it's a heavier gauge wire than most of the others under the hood.
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That looks like the HEI wire to me.
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Nope. HEI is working fine.

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Is the AC working properly? What year truck?
AC works fine on my 72 Chevy.


As for the idle stop solenoid, the carb doesn't have one and this wire "appears" to be factory and is routed to the passenger side of the truck. Wouldn't the solenoid be on the throttle linkage on the driver side?
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Old 08-12-2013, 01:34 PM   #12
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Re: What is this wire supposed to connect to

Maybe a fan wire in a non-a/c harness that is not used in an a/c truck? Does it have power anytime?

I would trace it back to the firewall bulkhead and then inside and see where it connects.
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Old 08-12-2013, 03:33 PM   #13
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Re: What is this wire supposed to connect to

Quote:
Originally Posted by SS Tim View Post
My thought, if it is pink, is the idle stop solenoid found on some trucks.
I have a pink wire that looks just like the one in the pictures connected to idle stop solenoid on mine.
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