1 more wire

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Old March 31st, 2024, 01:05 PM
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1 more wire

I have 1 connector coming out of my engine wiring harness that I have not figured out where it goes. I have looked through the diagram and still having a rough time. TIA
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Old March 31st, 2024, 01:29 PM
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My guess is not factory. I say that because it looks like the brown wires are just jammed into the male connector. There's no female plastic piece the brown wires are attached to. But what year/model of car are you working on? If it is factory there should be something in the wiring schematic that reflects it.

Or am I seeing it backwards? Are either of the red wires connected or are they just in the background. Is it two brown wires in one male plug?
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Old March 31st, 2024, 01:47 PM
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Sorry the red wires are behind the image of the connector. They are not attached to it is a 1970 Cutlass Supreme. 2 Brown wires in a female plug located before the alternator wires and oil and temp sensors..

Last edited by Chuxter; March 31st, 2024 at 02:01 PM.
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Old March 31st, 2024, 02:10 PM
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Think I just figured it out. I have converted over to an internally regulated alternator, and this plug I believe went to the back of the old alternator. It has been many years since I have torn this down and didn't remember this. Does this sound correct?
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Old March 31st, 2024, 03:04 PM
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That plug, as wired w/ two Brown wires, would not have attached to a 1970 internal VR ALT. The ALT would have been a Blue wire & a White wire in one plug attached to back of ALT.
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Old March 31st, 2024, 03:13 PM
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I think the under hood light used one brown wire, and would be in that general area. But the two brown wires in one plug is not ringing a bell.
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Old March 31st, 2024, 03:15 PM
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I'm suspicious the two Brown wires emanate from the wiring harness then plug into another connector w/ one wire leading to the under hood lamp the other wire leading to the tail light feed from the main lamp switch.
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Old March 31st, 2024, 03:19 PM
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Only one other location I can think of which I'll capture in a moment off the wiring diagram. But this is the one I'm suspicious you might be evaluating...






Last edited by Vintage Chief; March 31st, 2024 at 03:21 PM.
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Old March 31st, 2024, 03:32 PM
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Of course, a wiring diagram doesn't provide the length of any wire & I can't say the length of the wire emanating from the Main Lamp Switch - yet, it's a possibility two wires emanate from one wire. Additionally, please note both the LH & the RH side markers have a two Brown wire feeds as you trace the Brown wire branch. I suspect you're looking at a lighting wire.



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Old March 31st, 2024, 05:50 PM
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That wire is the 12 V supply for the underhood light, which sits on the bottom of the hood above the master cylinder.
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Old March 31st, 2024, 05:59 PM
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Gary - I believe you're correct regarding the feed wire itself. But, as I recall, the actual Brown wire which connects to the underhood lamp has only one wire to the lamp itself doesn't it? It's been awhile since I re-wired my underhood lamp. I may be mistaken.



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Old March 31st, 2024, 06:13 PM
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I am pretty sure this harness is from a later model that has the internally regulated alternator harness. So I think I won't worry about it unless I need it. LOL I am sure I bought it here so I'll look back and see what I bought. Thanks for the help.
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Old March 31st, 2024, 08:01 PM
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Norm, you are correct.

The double-brown wire in the Packard connector mates with a single-brown, which is the lead to the underhood light.

The first photo shows the connection between the double-brown and single-brown wires.

The next one shows the single-brown lead at the underhood light.


Connector is in the center of the picture nearer the right-hand side

The single brown from the connector powers the underhood light
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Old April 1st, 2024, 05:15 AM
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Originally Posted by VC455
Norm, you are correct. The double-brown wire in the Packard connector mates with a single-brown, which is the lead to the underhood light.


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