What is this wire / connector

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Bruce Wingate

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This connector with the yellow / purple wires is located near the bottom of my steering column. "Near" is relative. its under the dash in that general area.

I have a 1984 K10 with automatic trans (700r4).

Thanks,
Bruce.

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Matt69olds

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Neutral safety switch.

The yellow wire should show power with the ignition in the “crank” position. If you put power on the purple wire, the engine should crank.
 
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Bruce Wingate

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Matt69olds said:
Neutral safety switch.

The yellow wire should show power with the ignition in the “crank” position. If you put power on the purple wire, the engine should crank.
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My googling told me it was the neutral safety switch too, but that was for manual trucks.

So now for stupid question: If this is the NSS, how come my truck starts just fine? Is this just an extra wire GM left in a common harness? And finally, I thought on the '84, that the NSS was handled mechanically from within the steering column somehow.
 
Matt69olds

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Pretty sure that is the connector body that plugs into the NSS maybe the switch has been bypassed somewhere else?
 
Newcman1

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The attached may help clarify. It's from my wiring manual for my 85 K10 suburban with 700R4. My truck wiring does not have this connector. NOt sure why your truck does unless like you mentioned they used a common harness.
 

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greyghost

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put jumper wire in it, then it will start without pushing on clutch, use starter then to move truck into garage, off hiway, outta driveway so wife/mom doesn't hear you leave
 
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First post here been searching around for a while and found this thread. I hope I am not bringing back to old of a post!

If this is a NSS why does my auto have it. It looks like it is jumped in the terminal. And the diagram to me shows for auto there should not be a connector.

Why would it be burned up. Loose bad connector?!?
 

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newguy11

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Bringing this thread to the top again as I’m curious

Showing my ignorant here but. Don’t automatics have neutral safety switches? Isn’t that why the truck won’t start when in gear?
 
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Thedmax

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Yes autos do But that switch is lower on the column almost to the firewall also would be responsible for reverse lights on a column shift.
If I am not mistaken this would be for the clutch safety switch.
 
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