1991.5 LE-cab tilt-column.

These seven wires are all contained within the main pigtail that connects at the key-switch.

There are four separate little wires on a different pigtail that I assume only have to do with the lighted ring, right ??

Key-switch wires --- what does each one do ??


In order :


1. RED = HOT


2. BLACK/white stripe = (what I know so far) wipers, A/C clutch, Radio(aftermarket so may differ from OEM)

What else does this #2 wire power ??


3. BLACK/red stripe = I could not find any activity that this performed.

What does this #3 wire power ??


4. PINK/black stripe = HOT


5. Very skinny BLACK/? stripe = I could find no activity that this wire performed.

What does this #5 wire do ??


6. BLUE = gauges, buzzer, fuel-solenoid, brake information center (water-in-fuel, wait-to-start, etc.)


What else for wire #6 ??



7. YELLOW = engages the starter --- anything else ??


Any further information on the functions of these seven wires would be appreciated.


I assume that the color-codes continue at the bottom of the column harness, right ??


Thanks.

 

Bump
I would also like to know what these all do.

 

BUMP again.....................................

 

Hope this helps/works. Late model 91 from motoralldata

 

YES, that helps a bunch; now, if I could just make some sense out of their secret code.

 

Okey dokey, I got the secret code of that wiring diagram deciphered, I think.


That little bitty BLACK/grey-stripe wire, #5 in my list above, is wire # P51 in the diagram.

The diagram shows that wire only going to the BRAKE indicator light --- I guess to let one know that bulb is functional when the key is first turned ON.

And, to the MESSAGE CENTER --- I guess to light it up likewise.

Seeing as how the grid-heaters have been long gone, the RWALs will very soon be history, and the water-in-fuel wires have hung un-plugged for many years and will remain so, will I have any negative issues were I to eliminate that particular wire from the mix ??

I intend to install a separate park-brake indicator in an entirely different location.


Thanks.