Another Silly Electrical Question - Horn - 2005 TE450

I have been battling the wiring on my 2005 TE450 since I bought it used 4 years ago. I think it was wired in the garage to be street legal before I bought it.

My horn has never worked and a tab broke off of the back of the horn. I put on a new horn.

I connected what looked like the correct wires but it didn't work.

So, I ran a wires directly from the battery and somehow from the switch.

When the bike is not running, the battery sounds loud and great.

When the bike is running, it basically buzzes and is not loud.

I assume I am I missing something obvious. Is there an easy way to use the switch wire and battery to wire the horn?

Thanks,
Mike in Ocean County NJ

The first thing you are going to need is a voltage tester to check for voltage where you are attaching the horn, and the wiring diagram/ schematic for your bike. You say that when you attach the horn directly to the battery that it works. I can only assume then that you have purchased a DC HORN and not an AC HORN, they sell both. From what you describe it almost sounds as if you have picked up Part of the AC circuit from the switch, which would account for the horn not working correctly when the bike is running. I've seen them wired both ways with a lot of enduro bikes and strictly off road bikes having the headlight and tail light wired for ac voltage using a voltage regultor.You may have simply chosen the wrong wires when you hooked it up. The wiring diagram /schematic would verify the correct wires and would give you a starting point to find your problem.

Thanks, Waserman. I'll give it a try this week.