Steve, are you sure it isn't a 12V horn? I have seen a couple that are 12V.
Nope, the tag says 6.
Steve I ran into the same thing . It turned out to be a bad ground. Try running a separate ground wire.
The motor is dragging - clean the armature, lube the bearing points and adjust the tension point to your tone liking.
TV radio tube cleaner lube works woneders
And your problem is ????
Steve, that looks and sounds like the same Klaxon 8C that I have on my car. Some years back it started acting like yours so I cleaned the armature with 600 sandpaper, cleaned and lubed the bearings, cleaned the horn switch and the ground. It got a little better but still no joy.
What fixed it was resoldering the + wire to its terminal (where the horn switch wire is attached). The connection looked OK but I finally did this since everything else gave no great improvement. Now it just AOOOOGAAs its little heart out, even without the engine running at speed and charging.
So, there you have something to try if "all else fails".
The ground was fine. Cleaning the armature may have helped a little, but it was already pretty clean. A few drops of 3 in 1 really made the difference.
My grandfather, RIP, told me once if something couldn't be fixed with an oilcan and a hammer it wasn't worth messing with, good job, Steve. jb
Steve: Keep adjusting the little screw on the back till you get the sound you want.
That proves it, the squeaky horn gets the oil.
Adjust the scew out that adjusts the tention on diapham let it run readjust get tv tube cleaner real makes them wake up
Take two aspirin and call in the morning.
If you canít call in the morning you were too sick to help.
I went into the big Ace hardware store in Taos NM and asked where I could find 3 in 1 oil. The clerks behind the counter had no earthly idea what I was talking about. So I asked where the WD-40 was, and that they knew. Right next to it - big as life - was both the old faithful 3 in 1, but also 3 in 1 brand 20 weight motor oil, which was what I really wanted. Sad.
very good Steve, sounds a lot better now