auto column vs manual column wiring diff?

[jonlorio]

I am switching from a manual to c4 auto. The auto column I have has a diff style plug than my manual column. I haven't had time to analyze it very much, but is it just as simple as cutting the plug and connecting the wires without the plug? I know there is no NSS hookup on the manual column. Is that the only difference?

 

[oleguy74]

nss don't go through the coulmb.only other wire is for shift indicator lite.

 

[Viperwolf1]

You have a '73 or earlier Bronco and you want to put a '74 or later column in it, I assume.

There are some minor differences. The horn wiring is different. The '74 and later column uses 1 wire for the horn and a relay under the hood. Your old column uses 2 wires for the horn and no relay. You'll need to add a relay. The later column also has a PRNDL light circuit and a hazard flasher power circuit.

'66-'71 Column Connections
Blue=12v from turn flasher to turn switch, circuit #44
white-blue=right front turn and indicator lamp, circuit #2
orange-blue=right rear brake and turn lamp, circuit #5
green-white=left front turn and indicator lamp, circuit #3
green-orange=left rear brake and turn lamp, circuit #9
red-black=12v brake switch to turn signal switch, circuit #810
yellow=12v headlight switch to horn switch, circuit #460
blue-yellow=horn switch to horn, circuit #482

'72-'73 Column Connections
Blue=12v from turn flasher to turn switch, circuit #44
white-blue=right front turn and indicator lamp, circuit #2
green=right rear brake and turn lamp, circuit #282
green-white=left front turn and indicator lamp, circuit #3
yellow-black=left rear brake and turn lamp, circuit #283
red-black=12v brake switch to turn signal switch, circuit #810
yellow=12v headlight switch to horn switch, circuit #460
blue-yellow=horn switch to horn, circuit #482

'74-'77 Column Connections
Blue=12v from turn flasher to turn switch, circuit #44
white-blue=right front turn and indicator lamp, circuit #2
green=right rear brake and turn lamp, circuit #282
green-white=left front turn and indicator lamp, circuit #3
yellow-black=left rear brake and turn lamp, circuit #283
red-black=12v brake switch to turn signal switch, circuit #810
blue-yellow=12v horn relay to horn switch, circuit #1
white-red=12v from hazard flasher to hazard switch, circuit #385
blue-red=12v from headlight switch to PRNDL light, #19

NSS interupts the start wire to the starter solenoid and the backup light power.

 

[jonlorio]

awesome information! thanks.

 

[jonlorio]

Ok so I am finally getting around to getting this taken care of... On my 71, where is the "hazard flasher out", "inst light power", and "horn relay gnd trigger" located? Forgive my ignorance but my body with wiring is at my friends shop 35 miles away from me, and I have the steering column at my house. I tackle small projects at the house and then migrate to the friend's shop to piece it together.

 

[Viperwolf1]

Hazard flasher output is the white-red wire that goes between the haz flasher and the original dash haz sw.

Instrument light power is the blue-red wires going between the back of the instrument cluster bulbs and the headlight sw.

You will need to add a horn relay that is triggered with a switch. That switch is the horn circuit in the new column. When the horn is pressed on the newer column that switch connects to ground.

 

[jonlorio]

In reference to the attachment in your first reply, my 71 plug is a rectangle with 8 wires all in one plug. It consists of something like this...

It also seems like the PO decided to splice the wires 1" behind this plug... I am starting to think I may be better off buying some connectors from Painless in order to make up the new connection...

 

[Viperwolf1]

That 8-pin connector was only used for a few years '70-'73, I think.

 

[jonlorio]

OK, I take it that the yellow wire at the top left is for the headlight #460?

 

[Viperwolf1]

OK, I take it that the yellow wire at the top left is for the headlight #460?

That provides 12V from the headlight sw to the horn circuit. It's not used in the later columns.