I am trying to locate the wire from my steering wheel to the horn so I can put in a switch to disable the horn if I want to back up with my door open. I am reluctant to poke too many of the wires with the test light since the airbags are in there too.
Has anyone done this on a 2003 Ram? Do you know the wire color?

 

i thought that you could disable that with a tuner?

 

YOu can disable it by just pulling the horn fuse also. I never could figure out an easy way to find the wire.

 

I don't want to pull the fuse since then I have no horn at all. I just want to be able to temporarily disable it with a toggle switch in the cab.

 

better to tap wires under the hood than steering column. According to 2004 wiring diagram DG/OR (from horn relay)feeds both low and high note horns. BK/OR grd high note and BK/DB grd low note.

 

Another option is to fasten the seat belt.

 

I don't have a late model truck. But if pulling the fuse works, an option would be to use spade terminals and wire in a switch (with a inline fuse of course) across the port.

 

Jumper the two wires together on the driver side seat belt latch. The connector is under the drivers seat.

MikeyB

 

I always just fasten the seat belt across the seat when I'm trying to back up the trailer with the door open.

 

the seatbelt solution doesn't work for the 2003 trucks....i tried it already.