Noobie what plug is this?

[Mantooth]

Under the dash below radio/HVAC controls. Yellow has 12v and blue is not grounded.

 

[RonD]

1993 Ranger

It looks like a Ford connector, so maybe a Dealer added option

Solid Yellow and solid Blue are not "normal" Ford wiring colors, Ford liked to use dual colored wires for less mistakes and to ID what wires are for what in a harness, i.e. yellow/white, yellow/red, yellow/black

Solid Black and solid Red are used
There is at least 1 solid yellow from engine bay fuse box to ignition switch, this is ain't that

 

[Curious Hound]

I agree. I've had my dash completely out and don't recall ever seeing that connector in my 93. Trace the wire back and see where they go. Someone probably had an accessory installed and left that part of the wiring when they removed the device. Picture here if you want to look.

1993 Splash in SC

Just a helpful tip in case any of you ever need it. When removing the fan clutch from my water pump the other day,I used this technique to hold the hub so I could break the clutch free. I removed 2 of the pulley screws. Then inserted 2 pins from the rear of the hub. ( I had some brake caliper...

www.therangerstation.com

 

[Mantooth]

I agree. I've had my dash completely out and don't recall ever seeing that connector in my 93. Trace the wire back and see where they go. Someone probably had an accessory installed and left that part of the wiring when they removed the device. Picture here if you want to look.

1993 Splash in SC

Just a helpful tip in case any of you ever need it. When removing the fan clutch from my water pump the other day,I used this technique to hold the hub so I could break the clutch free. I removed 2 of the pulley screws. Then inserted 2 pins from the rear of the hub. ( I had some brake caliper...

www.therangerstation.com

That’s the confusing part is that it goes straight into the factory harness

 

[Josh B]

Absolutely true Ron and Eric. My 93 had a 10 CD changer added after market. It worked when I bought it but eventually ate a CD which I never could extract, and finally ended up extracting the entire unit.
I was given a complete file of maintenance records but didn't search it out. I already knew where the wires were, and they were also just what yall describe

 

[RonD]

Found something in Trailer wiring, Blue wire is often used for electric trailer brakes
Have a look on the back of the truck for trailer light plug in
Should be at least a 5 wire plug-in if it had trailer brake hook up

Trailer wiring seen here: https://www.therangerstation.com/tech/wiring-for-trailer-lights/

 

[Mantooth]

Found something in Trailer wiring, Blue wire is often used for electric trailer brakes
Have a look on the back of the truck for trailer light plug in
Should be at least a 5 wire plug-in if it had trailer brake hook up

Trailer wiring seen here: https://www.therangerstation.com/tech/wiring-for-trailer-lights/

There’s no trailer wiring on this guy

 

[RonD]

LOL

Maybe there was

In any case, since the Blue wire is not a ground, I would look for that Blue wire in engine bay or behind grill or at the rear
12Volt IN(yellow) means Blue wire is 12v OUT to power something
Maybe connector was for a switch in the cab
Driving lights
Reverse lights
Or my favorite........................a Mad Max style Supercharger

 

[alwaysFlOoReD]

There’s no trailer wiring on this guy View attachment 103566

No wiring on the trailer? How do the lights work? Dual axle means it should have working brakes too, and if not juice then electric.... That would be the blue wire...