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Old 07-16-2013, 11:00 PM   #1
billetproofcustoms
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what is this electrical connector!!?? HELP

OK,

so I have been trying to trace out my ignition circuit on my 1966 c10, the purple wire running from the ignition switch goes to this thing...this thing is located on the steering column, under the dash close to the firewall. It has 4 terminals; dark green and light green on one side, and 2 purples on the other. The purple coming from the starter goes to it, and the purple from the ignition switch goes to it as well...Long story short, according to wiring diagrams, I don't see this thing anywhere on any diagram, since it seems to split the circuit for the ignition (purple wire) I decided to jump it and see if I could get the truck to crank. it cranks when I jump the purple connectors. I could not get the truck to crank before this discovery...

what is this thing???

I enclosed a pic

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Old 07-16-2013, 11:03 PM   #2
19666Trucker
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Re: what is this electrical connector!!?? HELP

Neutral safety switch
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Old 07-17-2013, 12:38 AM   #3
Captainfab
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Re: what is this electrical connector!!?? HELP

That is a combination neutral safety and back up light switch. I assume your truck has the original auto trans column?
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Old 07-17-2013, 08:12 AM   #4
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Re: what is this electrical connector!!?? HELP

It does not appear on most wiring diagrams, because there were a lot less auto trucks than manual trans, then. At least that has been my experience, most diagrams do not cover the options for these trucks.
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Old 07-17-2013, 08:19 AM   #5
T Smith
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Re: what is this electrical connector!!?? HELP

Yep, the purple circuit is the starter solenoid and the greens are your back up lights!
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Old 07-17-2013, 09:52 AM   #6
billetproofcustoms
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Re: what is this electrical connector!!?? HELP

hey guys,

Thanks so much for the help! Auto Zone has these in stock. awesome. As always this forum is a life saver.

thanks guys.
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Old 07-17-2013, 09:53 AM   #7
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Re: what is this electrical connector!!?? HELP

Quote:
Originally Posted by tincan1966 View Post
It does not appear on most wiring diagrams, because there were a lot less auto trucks than manual trans, then. At least that has been my experience, most diagrams do not cover the options for these trucks.
good to know, because my truck is a fully optioned C10
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Old 07-17-2013, 09:56 AM   #8
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Re: what is this electrical connector!!?? HELP

Quote:
Originally Posted by Captainfab View Post
That is a combination neutral safety and back up light switch. I assume your truck has the original auto trans column?
Yes, it is an auto trans truck. thanks
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Old 07-17-2013, 09:57 AM   #9
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Re: what is this electrical connector!!?? HELP

Quote:
Originally Posted by T Smith View Post
Yep, the purple circuit is the starter solenoid and the greens are your back up lights!
thanks for the info!
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Old 07-17-2013, 09:57 AM   #10
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Re: what is this electrical connector!!?? HELP

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Originally Posted by 19666Trucker View Post
Neutral safety switch
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thanks
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Old 07-17-2013, 10:37 AM   #11
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Re: what is this electrical connector!!?? HELP

It has side to side adjustment for your back up lights.
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