Do you have stock wiring?
Where does the voltage for the volt meter come from? (Volt meter ain't stock)
Did you try unpluging  the wire to the steering column? I think there are 2, one at a time, this may help locate the problem.

Yup...that yellow wire is #460 I think.  It comes from the HL switch and provides power to the horn through the horn switch.  The clicking you were hearing is probably the circuit breaker in the HL switch cycling as that yellow wire is being grounded....not good.  This is what put Sal in the shop at Steve's back at the 2010 bash.  If it were night you'd be loosing you headlights.
Once you fix that you can easily do a little mod to use a horn relay and turn the horn button into a ground switch instead of a 12v power switch.  I have a simple diagram if you decide to go that way.

BB1
 

wsinsle wrote:

Do you have stock wiring?
Where does the voltage for the volt meter come from? (Volt meter ain't stock)
Did you try unpluging  the wire to the steering column? I think there are 2, one at a time, this may help locate the problem.

Walt, no it's not stock!  I dont remember exactly where the power comes from, too many years ago!!  
Are you coming to the Bash this year???  I don't think we've seen you since Montrose!  I'll never forget the trip you, Joe and I took down the  550 to Ouray!

terry wrote:

I remember his issue in 2010, in the middle of Steve's driveway till 10 oclock at night!  send me that wiring diagram,  The breaker was more that likely the clicking sound.  I prefer to fix this BEFORE the smoke leaks out!!

PM your email addy, Terry and I'll send it.

Bullet Bob wrote:

terry wrote:

I remember his issue in 2010, in the middle of Steve's driveway till 10 oclock at night!  send me that wiring diagram,  The breaker was more that likely the clicking sound.  I prefer to fix this BEFORE the smoke leaks out!!

PM your email addy, Terry and I'll send it.

BB its trobbinsplumbing@gmail.com 

terry wrote:

wsinsle wrote:

Do you have stock wiring?
Where does the voltage for the volt meter come from? (Volt meter ain't stock)
Did you try unpluging  the wire to the steering column? I think there are 2, one at a time, this may help locate the problem.

Walt, no it's not stock!  I dont remember exactly where the power comes from, too many years ago!!  
Are you coming to the Bash this year???  I don't think we've seen you since Montrose!  I'll never forget the trip you, Joe and I took down the  550 to Ouray!

No Terry, not going to make the bash. Still finishing up Brenda's and my moms estate. That was a great ride and I loved Joe's stories.

I vaguely remember posting on this in 2010 (maybe something else), hard to believe it was that long ago. 

your probably correct on that recollection of events, Steve!  I just remember the episode taking place in the driveway.  Bestest thing I remember about that bash was it was my first along with several others first!  Made some great friends that trip, some still are and some..............not so much..............

To answer the original question...

Replace the wiring whenever a new turn signal switch is installed.  The wiring comes on the switch, but without the big square plastic connector at the bottom. 
To avoid having to make a sketch every time, I simply cut the wires about 1” away from that plug, leaving enough of the color-coded wires in the plug to ID where the new wires go.  Then, once you fish the new wires down through the column tube (there is internal conduit in there where they fit through) just remove the 1” long wires one at a time and replace them with the new wire having the same color. You can use a small brass tubing to press the tang on the old wire’s connector along with a little tension on the wire to get it to release from the plug. The ink tube from an old ball point pen works great.

Originally back  in the day, the first ball point pen ink tubes were all  made from brass.
I’ll bet few here remember that bit of trivia.

MS wrote:

To answer the original question...

Replace the wiring whenever a new turn signal switch is installed. The wiring comes on the switch, but without the big square plastic connector at the bottom.
To avoid having to make a sketch every time, I simply cut the wires about 1” away from that plug, leaving enough of the color-coded wires in the plug to ID where the new wires go. Then, once you fish the new wires down through the column tube (there is internal conduit in there where they fit through) just remove the 1” long wires one at a time and replace them with the new wire having the same color. You can use a small brass tubing to press the tang on the old wire’s connector along with a little tension on the wire to get it to release from the plug. The ink tube from an old ball point pen works great.

The wiring in the internal conduit may be stuck, I had to spray WD-40 down this conduit to free them up, slid out after letting it soak for several minutes, and a little manipulation of the wiring back and forth.
 

Thanks for the trip down memory lane, Mike.  Jean was getting antsy to leave so we bailed just about the time MS pulled the steering wheel and discovered the culprit....Grunt steering wheel adapter/horn switch.  Our first Bash, what fun.  Can't wait to see youse guys again.