This realy is 12volt activated. There are 4 wires in the relay:
pin 85---- GRY/BLK wire that will have a ring terminal on the end that is to connect to a ground source
pin 86---- BLK wire (#987) that goes to the column. this is the power activation wire for the relay. This #987 at the column will connect to the blue/yellow wire from the factory column.
pin 30----- GRY wire this is a battery power wire that goes into a splice with 2 wires (1 from the horn fuse, the other wire provides a power source to the colum for horn activation. This wire at the column will be GRY #953). This #953 wire will connect to the yellow wire from the factory column.
pin 87----YLW, this is the wire that provides power out to the horn(s)
If you would rather ground operate the relay to avoid running power through the horn button:
Route the GRY #953 wire from the column to the #987 wire with the ring terminal near the horn relay. Remove the ring terminal and connect these 2 wires together, this will now send battery power to pin 85 of the relay.
The factory yellow wire from the column will now just need to be connected to a ground source.
Pin 86 (#987 GRY/BLK)will still route to the column and connect to the factory blue/yellow wire. This is still the activation wire, but now it will just send a ground signal via the yellow wire you just grounded.
