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1994 Power Locks Wiring Diagram


projectRanger93

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Manual
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Anyone have it or can link me where i can find it?

Long story short, i installed the power door harness from a 1993 into my 1993 and according my 1993 evtm, the black/white wire to the power lock switch should be hot, but it's not, and the black wires that should be ground are in fact the hot ones. Now I'm wondering if my diagram is wrong and they updated it in 1994. Help?
 


projectRanger93

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Joined
May 16, 2019
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337
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Location
Los Angeles, CA
Vehicle Year
1993
Make / Model
Ranger STX
Engine Type
4.0 V6
Transmission
Manual
2WD / 4WD
4WD
Tire Size
235/75-R15
Heres the 1994 door lock diagram
Thank you!
Now i'm at a loss. All i did was plug in the harness and the black/white and black wires are reversed polarities. Don't know what exactly is wrong, assuming my door harness or my truck's existing harness is stock and not tampered with. Did Ford somehow switch wires around for trucks that didn't have power doors?
 

RonD

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I can't say I have ever run into a solid black wire that was 12v, except battery cables, in general wiring its always 0v(ground)

Black with a stripe, yes, they can be 12v

So yes thats odd

How are you measuring the volts?
i.e. if you measure a devices ground wire FROM the device it will show 12volts, if device is powered, the 12v passes thru the device
 

projectRanger93

Well-Known Member
Joined
May 16, 2019
Messages
337
Reaction score
309
Points
63
Location
Los Angeles, CA
Vehicle Year
1993
Make / Model
Ranger STX
Engine Type
4.0 V6
Transmission
Manual
2WD / 4WD
4WD
Tire Size
235/75-R15
I can't say I have ever run into a solid black wire that was 12v, except battery cables, in general wiring its always 0v(ground)

Black with a stripe, yes, they can be 12v

So yes thats odd

How are you measuring the volts?
i.e. if you measure a devices ground wire FROM the device it will show 12volts, if device is powered, the 12v passes thru the device
So a quick update to this. I used my DMM to pinpoint the problem: two wires of opposite polarity were switched on the passenger side switch connection. I guess the previous owner of the harnesses had something done at some point. Anyways, it now matches the correct configuration, as pictured in the EVTM. Both door lock switches and the passenger window switch are basically shot, so i ordered new ones. All the wiring though is complete and working.
 

RonD

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TRS Technical Advisor
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Messages
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Location
canada
Vehicle Year
1994
Make / Model
Ford
Transmission
Manual

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