75 steering column upgrade - need wiring diagram

[DuneBuster]

I got a newer/better column at the Hudsonville swap meet than my '73 had, so I need to hook it up. this new column has a the original but very custom wrap around connector that fits next to the column shaft, so I know I need to get a whole new connector to mat with. More importantly I need the connector pin-outs for it. does anybody have the '75 wiring diagram to reference from??

 

[DJs74]

Below is a general link on Bronco electronics - it might help.

http://documents.clubexpress.com/do...adbwj9K6OC8qF0olHpL+WNf4OsatX0qwKNStefDAPBg==

Good luck

DJs74

 

[DuneBuster]

That's a great old manual for Bronco wiring! but it's the old 66-72 and the full schematics for that are at Bronco GraveYard (and I have those). Now I just need the newer 73-77 column pin-outs..

 

[DuneBuster]

Boy, talk about Ready Aim, Fire.
I found the full set of schematics at www.bronco.com

Never mind!

 

[Viperwolf1]

'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

 

[Steve83]

 

[zwoodward374]

Swapping a 74-77 column into a 72 bronco.. Want to use the 72 harness, what wires need to go together? It looks straightforward down to the red-black wire, the last two(or three) wires have me confused

'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

 

[Viperwolf1]

Swapping a 74-77 column into a 72 bronco.. Want to use the 72 harness, what wires need to go together? It looks straightforward down to the red-black wire, the last two(or three) wires have me confused

'72 uses a 2 wire horn circuit. '74-'77 is one wire. You need to add a horn relay.

circuit 460 to relay terminals 30 and 86
circuit 482 to relay terminal 87
circuit 1 (blue-yellow) wire to relay terminal 85

If you want to use the hazard switch on the column you need to move the white-red wire from the old haz sw to the white-red wire at the column.

Gear indicator light is same power as all other dash lights.

 

[zwoodward374]

'72 uses a 2 wire horn circuit. '74-'77 is one wire. You need to add a horn relay.

circuit 460 to relay terminals 30 and 86
circuit 482 to relay terminal 87
circuit 1 (blue-yellow) wire to relay terminal 85

If you want to use the hazard switch on the column you need to move the white-red wire from the old haz sw to the white-red wire at the column.

Gear indicator light is same power as all other dash lights.

Thanks.. I am keeping the old haz switch(no need for the white-red wire). I am really not worried about the horn working..

Could i do blue-yellow to blue-yellow for the horn and blue-red to solid yellow for the gear indicator?

 

[zwoodward374]

I am trying to use the 72 column plug(square 7 wire plug) on the 74-77 column wiring (9 wire plug) while they are both out of the truck and on the table

 

[zwoodward374]

72 8 wire plug*

 

[Viperwolf1]

Could i do blue-yellow to blue-yellow for the horn and blue-red to solid yellow for the gear indicator?

Only if you want a non-working horn and a gear indicator light that will drain the battery when it's parked.

 

[zwoodward374]

Only if you want a non-working horn and a gear indicator light that will drain the battery when it's parked.

Ok thank you, i appreciate your help.. Can you help me make some sense of this.. If i do not care about the horn am i better of leaving them both unhooked?

 

[Viperwolf1]

What doesn't make sense?

In order for the horn to work you will need a horn relay, like all '74-'77 Broncos.

Pick any blue-red wire going to a light bulb in the instrument cluster. Add a wire to it to go to indicator wire in the column.

 

[Steve83]

It's possible to use a 1-wire horn switch without a relay, but the HORN would require 2 wires, and it couldn't be grounded.