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73-87 Chevy _ GMC Trucks => Interior & Equipment => Steering Columns => Topic started by: Choptop32 on July 27, 2008, 11:44:32 pm

Title: 78 Steering Column wiring diagram?
Post by: Choptop32 on July 27, 2008, 11:44:32 pm

Anyone have one? or at least a list of the wires?

Actually just need to know which pin is for the horn.

Title: Re: 78 Steering Column wiring diagram?
Post by: Captkaos on July 28, 2008, 10:03:16 am

do you have a Chiltons or Haynes manual?

Title: Re: 78 Steering Column wiring diagram?
Post by: Choptop32 on July 28, 2008, 11:33:45 am

Nope, thats why I asked here. Was hoping that someone would know, or have a manual that they could look in to tell me.

I've got a 78 column in my 64 Panel Truck, so buying a Chiltons just to find out where one wire is would be a little excessive.

if anyone knows, or could look it up I would appreciate it.

Title: Re: 78 Steering Column wiring diagram?
Post by: VileZambonie on July 28, 2008, 12:09:38 pm

The horn wire is circuit 28 .5mm black wire adjacent to the light blue wire. It grounds the horn relay.